Alpine Fit | Athletic Thong

Please note this item is not returnable. Reach out to us with questions before purchasing.

For those who love a barely-there feel with stay-put comfort, the Athletic Thong is your go-to for adventure, travel, and everyday wear. Designed to be smooth, invisible, and ultra-soft, this thong hugs your curves with seam-free edges that eliminate pinching and awkward lines—so you can move freely and confidently.

Developed with input from 16 wear testers across all sizes, this design has been met with rave reviews for its exceptional fit and performance. Made from our Sea-renity™ fabric, featuring Umorfil® Bionic Nylon—a luxurious, responsibly sourced material derived from collagen-rich fish scales, reducing waste as a by-product of food production. This thong is quick-drying, naturally odor-resistant and incredibly soft against the skin.

• Packs small—perfect for travel, workouts, and spontaneous adventures

• Dries quickly—for more miles on the trail

• Invisible under clothing—no pinching, rolling, or visible lines

• Made in the USA from imported fabric

Fabric

Alpine Fit's Sea-renity™ super soft athletic fabric is designed for performance and comfort:

• 83% Umorfil® Bionic Nylon

• 17% Spandex

Fit

The Athletic Thong is designed to fit true to size but is a comfy fit that is not tight, so if you want something more snug or if you’re between sizes, we recommend sizing down for the best fit.

Special Note on Returns & Exchanges

Due to the intimate nature of this product, all Athletic Thong and Athletic Hipster purchases are final sale. Please reach out with fit questions before purchasing—Alpine Fit is happy to help!

Size Guide (Wear Tester References)

Megan is wearing size XS, she is 5'2" with 27.5" waist and 34.5" hip

• Size XS - 5'6", 25.75" waist, 36.5" hip

• Size XS - 5'7", 28" waist, 34.75" hip

• Size Small - 5'5", 28" waist, 37" hip

• Size Small - 5'3", 28.75 waist, 38.5" hip

• Size Medium - 5'7", 30.5" waist, 43.25 hip

• Size Medium - 5'8", 33" waist, 39.75" hip

• Size Large -  5'10", 35.5" waist, 45.25" hip

• Size Large - 5'9", 33" waist, 43.5" hip

• Size XL - 5'10", 43.5" waist, 47.5" hip

• Size XL - 5'8", 38" waist, 49" hip

• Size XXL - both our models are happy to share that they comfortably wear the same XXL size in our Bushwhacking Leggings and Rendezvous Ridge Long Sleeve  

Choose this along with the Athletic Hipster for added versatility based on personal preference.

Specs

• Made in the USA from imported fabric

• Size M - 15g / 0.5 oz