Story
Part swim trunk, part active short
Two shorts in one, this is our pick for all-day adventures in and out of the water. Built from a quick-drying four-way stretch fabric with an ultra-soft liner approved by elite triathletes, it can power everything from laps in the pool and longboard sessions to beach workouts and the bike ride back to the lakehouse. It offers UPF 50+ protection from the sun, fast-draining mesh pockets, and hidden sleeves for stashing your essentials.
It’s Wellen's bestselling trunk, newly updated for Proof.
Features
- Athletic fit with a comfortable waistband
- Ultra-soft AC Liner™ approved by elite triathletes
- Mesh-lined side pockets with hidden AirPods sleeve, a back snap pocket with an embedded key bungee, and a new hidden side zip pocket
Sizing
- The Performance Lined Swim Trunks run true to size. Order your standard pant or short size.
- Still not sure what size to buy? Grab a pair of shorts at home to compare to the garment measurements below:
Garment Measurements
|
XS |
S |
M |
L |
XL |
XXL |
| Waist |
28¼ |
30¼ |
32½ |
34½ |
37 |
40 |
| Thigh |
12½ |
13 |
13½ |
14⅛ |
14⅞ |
15⅝ |
| Leg Opening |
10¼ |
10⅝ |
11 |
11½ |
12⅛ |
12¾ |
| Inseam |
7 |
7 |
7 |
7 |
7 |
7 |
All measurements are in inches.
How to Measure
- Waist: Align the front and back waistbands so they’re stacked on top of each other, then measure from edge to edge across the middle of the waistband, multiply by 2
- Thigh: Starting 1" below the crotch seam, measure straight across from edge to edge (not from seam to seam)
- Leg Opening: Measure across the bottom hem from edge to edge
- Inseam: Measure from the crotch seam down to the bottom of the leg hem, following along the inside of the leg
Materials & Care
- 4-way stretch fabric made from 92% recycled polyester and 8% spandex
- AC Liner™ made from 90% polyester and 10% spandex
- Made in Vietnam
- Machine wash cold. Wash inside out. Do not bleach. Tumble dry low.
About Proof by Huckberry
Designed in Austin and tested on Huckberry adventures worldwide, Proof’s performance apparel is built for a life in motion. We focus on classic designs powered by modern fabrics that regulate temperature, wick sweat, and protect from the sun. The result is category-bending gear that performs hard, wears easy, and brings personality to everyday performance. This is gear for growth.
The Sweat Test Guarantee
Put your new Proof gear through its paces. If it does not meet your expectations, we'll accept your dirty laundry and issue a refund, no questions asked.
Terms and limitations here
