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Backside Thong

Backside Thong

LOW RISE, HIGH CUT LEG, THONG BUM
$110 CAD

Gettin' cheeky with it.
Be prepared to hear "nice bum, where ya from?" more than you ever thought possible, in our high cut, super comfy thong swim bottoms.

Colour Eclipse (Grey) Shop This Colour

What Size Am I?

Book a one-on-one virtual fit consult with an LOF Concierge or follow our tips below.

Book a fit consult

Tips to find the perfect suit:

  • Our suits are designed to fit snug and feel compressive but not crazy tight.
    The elastics shouldn't dig. If they do, try a size up.
  • In-between sizes? Keep the compressive tip in mind. A snug fit in the changing room will give you the best fit in the water. Only size up if you can maintain that compressive fit.
  • Remember that when you're in the water, your suit will relax a tiny bit -- we designed with this in mind.
  • If you have an extra long torso, try a tall version of our one-pieces! Our tall length one-pieces also work great for bigger boobs, to give some more room in the shelf.
  • Bust measurement is your overall bust circumference, taken around the largest part of your chest (not just your bra band size).
  • High-waisted styles sit at your waistline, so size these bottoms to your waist measurement as best as possible. Low rise more your style? Size to your hip measurement.
  • Measure yourself and find the closest match in the chart for your size.
  • To browse women wearing LOF IRL check out our gallery here.
Fit Guide Measurements for Torso, Bust, Waist and Hip
  Bust Waist Hip Torso TALL Torso
XS 31-33" 24" 33-34" 57-60" 59-62"
S 33-35" 27" 35-36" 58-61" 60-63"
M 35-37" 29" 37-38" 60-63" 62-65"
L 37-39" 31" 39-40" 61-64" 63-66"
XL 39-41" 33" 41-42" 62-65" 64-67"
XXL 41-43" 35" 43-44" 63-66" 65-68"

Want it faster?

Find it in store

Backside Thong - Eclipse

Backside Thong

$110

Colour: Eclipse (Grey)

Size: XS

See what’s in stock at your local store.
Visit in store to purchase.

Vancouver

Summer Store

Sold Out

Store Hours

Mon - Sun 10am - 8pm

Store Details

2127 W 4th Ave, Vancouver, BC V6K 1N7, Canada

604-742-9055 W4thstore@leftonfriday.com
Get directions

Toronto

Flagship Store

Sold Out

Store Hours

Sun - Fri 11am - 7pm
Sat 10am - 7pm

Store Details

884 Queen St W, Toronto, ON M6J 1G3

437-567-1969 queenstore@leftonfriday.com
Get directions

Victoria

Showroom

Sold Out

Store Hours

Mon - Fri 10am - 6pm
Saturday 10am - 5pm
Sunday 12pm - 5pm

Store Details

2610 Rock Bay Ave, Victoria, BC V8T 4R7

250-216-0118 victoriastore@leftonfriday.com
Get directions

Muskoka

Summer Store

Sold Out

Store Hours

Mon - Sun 10am-5pm

Store Details

2 James Bartleman Way, Port Carling, ON P0B 1J0

705-765-7778 muskokastore@leftonfriday.com
Get directions

Complimentary shipping
& easy returns

Want it faster?

Find it in store

Backside Thong - Eclipse

Backside Thong

$110

Colour: Eclipse (Grey)

Size: XS

See what’s in stock at your local store.
Visit in store to purchase.

Vancouver

Summer Store

Sold Out

Store Hours

Mon - Sun 10am - 8pm

Store Details

2127 W 4th Ave, Vancouver, BC V6K 1N7, Canada

604-742-9055 W4thstore@leftonfriday.com
Get directions

Toronto

Flagship Store

Sold Out

Store Hours

Sun - Fri 11am - 7pm
Sat 10am - 7pm

Store Details

884 Queen St W, Toronto, ON M6J 1G3

437-567-1969 queenstore@leftonfriday.com
Get directions

Victoria

Showroom

Sold Out

Store Hours

Mon - Fri 10am - 6pm
Saturday 10am - 5pm
Sunday 12pm - 5pm

Store Details

2610 Rock Bay Ave, Victoria, BC V8T 4R7

250-216-0118 victoriastore@leftonfriday.com
Get directions

Muskoka

Summer Store

Sold Out

Store Hours

Mon - Sun 10am-5pm

Store Details

2 James Bartleman Way, Port Carling, ON P0B 1J0

705-765-7778 muskokastore@leftonfriday.com
Get directions

Complimentary shipping

Insanely Comfortable Fit™

  • Low rise thong bikini bottom
  • High cut leg, scoop front
  • Find your size with our Fit Guide
  • Compare to other styles here

Need help finding the right suit? Got fit questions? Good news, we’re here - book a 1-on-1 virtual appointment with an LOF Concierge or email us at sos@leftonfriday.com.

Designed in Vancouver, Canada. Made in California + Taiwan.

Smoothing Dream Fabric ®

  • Insanely soft
  • Smoothing coverage
  • Compressive when wet & dry 
  • Dries quickly
  • Fade + snag resistant
  • Can handle chlorine and saltwater. Just remember to rinse your suit in fresh water before and after you swim
  • Machine wash, line or tumble dry
  • Fabric from Italy - 46% nylon, 38% polyester, 16% Lycra®

Easy Care

  • Washing it post activity helps prolong the life/colour/fit of the suit.
  • Machine wash with like colours & fabrics, on cold & lay flat to dry. Wash whites with whites! In a rush? Our suits are dryer friendly. 
  • Chlorine is hard on lycra and limits the life of any suit - #facts. To prolong your suit, machine wash it after each chlorine/pool swim and do your best not to leave it in the locker.
  • More care deets here.

Shipping & Returns

Please note: All promotional items are final sale and cannot be returned for a refund or exchange.

Returns and exchanges can be made within 21 days from the date your order is delivered. We offer a one time complimentary exchange or return for a store credit, at no additional cost. Exchange orders are sent via standard shipping only. If you are returning for a refund, a $15 processing fee per order (not per item) will be deducted from your refund due. 

All product must be in new, unused condition with all the original Left On Friday tags and that handy hygiene sticker must still be attached. We reserve the right to refuse a refund if a product is damaged, excessively dirty, or missing tags/stickers.

Full shipping and returns/exchange info here.

Plunge Top + Backside Thong - Eclipse (Size S) Plunge Top + Backside Thong - Eclipse (Size S)
Plunge Top + Backside Thong - Eclipse (Size S) Plunge Top + Backside Thong - Eclipse (Size S)
Plunge Top + Backside Thong - Eclipse (Size S) Plunge Top + Backside Thong - Eclipse (Size S)
Rays Short Sleeve Top - Rescue + Backside Thong - Eclipse (Size S) Rays Short Sleeve Top - Rescue + Backside Thong - Eclipse (Size S)
Backside Thong - Eclipse Backside Thong - Eclipse
1 / 5

Shop This Look

Contains 2 products

Eclipse (Grey)

Product Details +

Eclipse (Grey)

Product Details +

Backside Thong

LOW RISE, HIGH CUT LEG, THONG BUM
$110 CAD

Gettin' cheeky with it.
Be prepared to hear "nice bum, where ya from?" more than you ever thought possible, in our high cut, super comfy thong swim bottoms.

Colour Eclipse (Grey) Shop This Colour

What Size Am I?

Book a one-on-one virtual fit consult with an LOF Concierge or follow our tips below.

Book a fit consult

Tips to find the perfect suit:

  • Our suits are designed to fit snug and feel compressive but not crazy tight.
    The elastics shouldn't dig. If they do, try a size up.
  • In-between sizes? Keep the compressive tip in mind. A snug fit in the changing room will give you the best fit in the water. Only size up if you can maintain that compressive fit.
  • Remember that when you're in the water, your suit will relax a tiny bit -- we designed with this in mind.
  • If you have an extra long torso, try a tall version of our one-pieces! Our tall length one-pieces also work great for bigger boobs, to give some more room in the shelf.
  • Bust measurement is your overall bust circumference, taken around the largest part of your chest (not just your bra band size).
  • High-waisted styles sit at your waistline, so size these bottoms to your waist measurement as best as possible. Low rise more your style? Size to your hip measurement.
  • Measure yourself and find the closest match in the chart for your size.
  • To browse women wearing LOF IRL check out our gallery here.
Fit Guide Measurements for Torso, Bust, Waist and Hip
  Bust Waist Hip Torso TALL Torso
XS 31-33" 24" 33-34" 57-60" 59-62"
S 33-35" 27" 35-36" 58-61" 60-63"
M 35-37" 29" 37-38" 60-63" 62-65"
L 37-39" 31" 39-40" 61-64" 63-66"
XL 39-41" 33" 41-42" 62-65" 64-67"
XXL 41-43" 35" 43-44" 63-66" 65-68"

Want it faster?

Find it in store

Backside Thong - Eclipse

Backside Thong

$110

Colour: Eclipse (Grey)

Size: XS

See what’s in stock at your local store.
Visit in store to purchase.

Vancouver

Summer Store

Sold Out

Store Hours

Mon - Sun 10am - 8pm

Store Details

2127 W 4th Ave, Vancouver, BC V6K 1N7, Canada

604-742-9055 W4thstore@leftonfriday.com
Get directions

Toronto

Flagship Store

Sold Out

Store Hours

Sun - Fri 11am - 7pm
Sat 10am - 7pm

Store Details

884 Queen St W, Toronto, ON M6J 1G3

437-567-1969 queenstore@leftonfriday.com
Get directions

Victoria

Showroom

Sold Out

Store Hours

Mon - Fri 10am - 6pm
Saturday 10am - 5pm
Sunday 12pm - 5pm

Store Details

2610 Rock Bay Ave, Victoria, BC V8T 4R7

250-216-0118 victoriastore@leftonfriday.com
Get directions

Muskoka

Summer Store

Sold Out

Store Hours

Mon - Sun 10am-5pm

Store Details

2 James Bartleman Way, Port Carling, ON P0B 1J0

705-765-7778 muskokastore@leftonfriday.com
Get directions

Complimentary shipping
& easy returns

Want it faster?

Find it in store

Backside Thong - Eclipse

Backside Thong

$110

Colour: Eclipse (Grey)

Size: XS

See what’s in stock at your local store.
Visit in store to purchase.

Vancouver

Summer Store

Sold Out

Store Hours

Mon - Sun 10am - 8pm

Store Details

2127 W 4th Ave, Vancouver, BC V6K 1N7, Canada

604-742-9055 W4thstore@leftonfriday.com
Get directions

Toronto

Flagship Store

Sold Out

Store Hours

Sun - Fri 11am - 7pm
Sat 10am - 7pm

Store Details

884 Queen St W, Toronto, ON M6J 1G3

437-567-1969 queenstore@leftonfriday.com
Get directions

Victoria

Showroom

Sold Out

Store Hours

Mon - Fri 10am - 6pm
Saturday 10am - 5pm
Sunday 12pm - 5pm

Store Details

2610 Rock Bay Ave, Victoria, BC V8T 4R7

250-216-0118 victoriastore@leftonfriday.com
Get directions

Muskoka

Summer Store

Sold Out

Store Hours

Mon - Sun 10am-5pm

Store Details

2 James Bartleman Way, Port Carling, ON P0B 1J0

705-765-7778 muskokastore@leftonfriday.com
Get directions

Complimentary shipping

Insanely Comfortable Fit™

  • Low rise thong bikini bottom
  • High cut leg, scoop front
  • Find your size with our Fit Guide
  • Compare to other styles here

Need help finding the right suit? Got fit questions? Good news, we’re here - book a 1-on-1 virtual appointment with an LOF Concierge or email us at sos@leftonfriday.com.

Designed in Vancouver, Canada. Made in California + Taiwan.

Smoothing Dream Fabric ®

  • Insanely soft
  • Smoothing coverage
  • Compressive when wet & dry 
  • Dries quickly
  • Fade + snag resistant
  • Can handle chlorine and saltwater. Just remember to rinse your suit in fresh water before and after you swim
  • Machine wash, line or tumble dry
  • Fabric from Italy - 46% nylon, 38% polyester, 16% Lycra®

Easy Care

  • Washing it post activity helps prolong the life/colour/fit of the suit.
  • Machine wash with like colours & fabrics, on cold & lay flat to dry. Wash whites with whites! In a rush? Our suits are dryer friendly. 
  • Chlorine is hard on lycra and limits the life of any suit - #facts. To prolong your suit, machine wash it after each chlorine/pool swim and do your best not to leave it in the locker.
  • More care deets here.

Shipping & Returns

Please note: All promotional items are final sale and cannot be returned for a refund or exchange.

Returns and exchanges can be made within 21 days from the date your order is delivered. We offer a one time complimentary exchange or return for a store credit, at no additional cost. Exchange orders are sent via standard shipping only. If you are returning for a refund, a $15 processing fee per order (not per item) will be deducted from your refund due. 

All product must be in new, unused condition with all the original Left On Friday tags and that handy hygiene sticker must still be attached. We reserve the right to refuse a refund if a product is damaged, excessively dirty, or missing tags/stickers.

Full shipping and returns/exchange info here.

Brights

Insanely
Comfortable Fit™

Smoothing
Dream Fabric™

4.6
Rated 4.6 out of 5 stars
Based on 57 reviews
Slide 1 selected
Reviews Summary
Customers say this thong bikini bottom is comfortable and stays securely in place during swimming, snorkeling, and water sports. The fit is flattering with good front coverage, and the soft, high-quality fabric feels smooth. Many appreciate the cheeky cut and vibrant colors. Sizing runs true to size according to most reviewers. Some note occasional side rolling or slipping, particularly for those without fuller hip shapes, and a few mention the front could be slightly wider. Overall, customers love the fit and feel confident wearing this style.
57 reviews
  • A
    Verified Buyer
    I do not recommend this product
    Rated 1 out of 5 stars
    2/24/25
    Quality Issues

    Quality issues - first time customer who had high hopes. Despite detailed measurements, review of size guide, and tips for fit, both bikini styles experiences significant rolling after a four day beach vacation. I have less expensive suits where this is a non-issue. Trying to resolve with customer service who (indirectly) questioned my ability to purchase a size based on my measurements. I understand trying to help a customer, but if measurements don't match a size chart (which I used to get my perfect fit), that's on the company.

    LO Profile picture for Left On Friday Canada
    Left On Friday Canada
    3/7/25

    Thanks for sharing your experience and reaching out to our team directly for resolution. LOF suits are designed with performance, quality and aesthetic in mind, and are seamless in appearance to help support that vision. It is not uncommon for the sides of a seamless garment to slightly roll from time to time - we do our best to match our liners with the colour of each suit, as this helps to lessen the accentuation of this.

  • Jennifer K.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    7/6/24
    Love it!

    I can’t say enough about LOF swimwear, it’s all fabulous in every way. Don’t know how you did it again, but this thong, like all swimwear here is beautiful in colour, amazing fit, and it’s buttery-smooth feeling. Love it!

  • Jennifer W.
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    8/26/25
    Backside Thong

    Overall, I love these bottoms- very well made using a beautiful, high quality fabric. I exclusively wear thongs and find them quite comfortable, but noticed right away that the backside of these bottoms are a little wide between the cheeks, and could be a little narrower to improve comfort and fit. I’m still happy with the purchase and am in LOVE with the intensity of the Aloha colour.

  • Jac
    Verified Buyer
    I recommend this product
    What size did you purchase? L
    Rated 5 out of 5 stars
    7/29/23
    Sun's Out Bum's Out!

    The cheekiest, most secure feeling thong bottom EVER! I love love love this bottoms to toast my peach but also feel secure enough to go paddle boarding and wake boarding in

  • Victoria H.
    Verified Buyer
    I recommend this product
    What size did you purchase? M
    Rated 5 out of 5 stars
    7/9/23
    Confident in this Thong

    I have never worn a thong bikini before. I was nervous to show so much at the beach. But I love this thong. The material, fit and style make it comfortable and it looks great.

Chat with a Fit Expert

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To speak with a real person, just click the chat icon in the bottom right corner. You can also schedule a free one-on-one fit consultation to ensure you get the right size with one of our fit experts.

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