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A lightweight, thermoregulating active fleece engineered from Coolcore® fabric
Our new GridFleece Half-Zip was engineered to breathe in motion and insulate at rest. It’s a lightweight technical layer cut from Coolcore® fleece, an advanced textile with a grid-textured face that traps in heat while pushing moisture away from the body. Unlike traditional performance fabrics that often rely on mineral or chemical applications, Coolcore® delivers reliable moisture control and temperature regulation at the yarn level. This is achieved through a proprietary fiber geometry, which, much like our team behind Proof, is inspired by nature.
Features
- Advanced Coolcore® fabric for optimized temperature regulation and moisture control
- Center-front half-zip offers adjustable ventilation during high-intensity activities
- Stretch fleece construction with underarm gussets for unrestricted mobility
- Secure zippered chest pocket paired with dual handwarmer pockets
Sizing
- The GridFleece Half Zip fits true to size; take your usual size
- For the best personal fit, compare the measurements of one of your best-fitting shirts to the garment measurements below
Garment Measurements
|
XS |
S |
M |
L |
XL |
XXL |
| Chest |
37 |
39 |
41 |
43½ |
46 |
49 |
| Shoulder |
16⅛ |
16⅝ |
17⅛ |
17¾ |
18⅜ |
19⅛ |
| Body Length |
26¼ |
27 |
27¾ |
28½ |
29¼ |
30 |
| Sleeve Length |
33¾ |
34½ |
35¼ |
36 |
36¾ |
37¼ |
All measurements are in inches.
How to Measure
- Chest: Measure straight across from edge to edge, starting 1" below the armhole, multiply by 2
- Shoulder: Measure straight across from shoulder seam to shoulder seam. Again, it’s easiest to measure across the back of the garment
- Body Length: Start at the top of the shoulder where it meets the neck seam, and measure straight down to the hem
- Sleeve Length: Start at the center of the back of the neck, measure straight across to the shoulder seam, and then follow the edge of the garment to the cuff. Pro tip: it’s easiest to measure across the back of the sleeve
Materials
- 95% recycled polyester, 5% spandex
- Herringbone taping along cuffs, hem, and pocket openings
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
