A silicone gripper can help, but first check why the shorts ride up. Shorts often ride up because the leg opening is too loose or too short, the fabric lacks recovery, or the pattern pulls when the wearer moves. A gripper adds friction against the skin at the hem, which holds the leg in place, but it does not fix a pattern or fabric problem.

Types of gripper

Common options are an elastic tape with silicone lines or dots on its inner face, sewn or bonded inside the hem, or silicone printed directly on the inside of a wide hem band. Wider bands with a light silicone pattern spread the grip and pressure over more skin than a narrow tape with heavy silicone.

Trade-offs

Silicone grippers can feel warm, can mark the skin if the band is tight, and some people find them irritating, especially in hot weather or on long runs. Silicone can also wear or peel with washing and drying. Many gym and training shorts work well with a wide, soft hem band and the right leg opening, without silicone. Cycling and long-distance running shorts are where grippers are most common.

Check the leg first

Measure the leg opening relaxed and extended in each size against the specification, and check the fabric's stretch and recovery with methods such as ASTM D4964 or ASTM D2594. Fit samples on people running or cycling, not just standing. A slightly smaller leg opening or a longer inseam may be enough.

Durability

If you add silicone, wash samples with a named procedure such as ISO 6330 at your label settings and several cycles, then check for peeling, cracking and loss of grip. Ask the trim or print supplier for the silicone type and its recommended care, and make the care label consistent with it.

What to specify

Write the hem construction, band width, gripper type, silicone pattern and position, and leg opening per size. Approve a washed wear-tested sample as the bulk reference.

Consider offering grippers only on styles meant for running or cycling, so gym customers who dislike silicone have a choice.