10 PCS Baseball Caps Inserts, Flexible Washable Reusable Hat Sweat Liner, Hat Liners Sweat Protection, Hat Shaper Insert, Hat Stiffener, Baseball Cap Sweat Liner (Black & White)

Premium Felt Sweat Hat Liners – These nosweat hat liners are made from thick yet breathable felt that absorbs moisture and keeps you dry. Durable, washable, and tear-resistant, ideal for long-lasting hat sweat protection.

Customizable Hat Insert to Keep Shape – Each cap sweat liner measures approx. 11.4×4.9in (29×12.5cm) and can be trimmed for the perfect fit. Supports hat structure and curve without adding bulk.

Sweat Absorption + Structure Reinforcement – Use as a baseball hat sweat liner and cap shaper to prevent sweat stains and sagging. Just place inside the cap brim—no glue or stitching needed.

Universal Fit for Most Hats – Compatible with baseball caps, trucker hats, fedora hats, tennis caps, golf hats, and more. Designed for men and women with head sizes 22–23in (55–58cm).

10PCS Value Pack – Sweat Guards & Hat Stiffeners – Comes with 5 black and 5 white sweat hat inserts for daily wear or replacements. The perfect blend of hat sweat guard and hat shaper in one.

Keep your favorite hats sweat-free and looking crisp with this 10PCS pack of hat sweat liners and shapers. These felt hat inserts to keep shape are designed to absorb moisture while maintaining your baseball cap’s form and structure. Use them as a baseball hat sweat liner, cap sweat protector, or general hat stiffener. Each piece can be trimmed to fit various hat types, including golf hats, tennis caps, fedora hats, and more. With 5 black and 5 white no sweat hat liners, you’ll always have a fresh backup on hand. Perfect for daily use, gym, outdoor work, or hot summer days. Lightweight, reusable, and easy to clean—your hats stay dry, structured, and comfortable.