Aero Tech Men's Top Shelf Padded Bike Short - Cycling Shorts Made in USA Smooth flatlock stitching feels soft against your skin, the absence of seams on the inner leg greatly reduces your opportunity to experience abrasion, chafing, and saddle sores. The four-way stretch tricot knit 7.5oz fabric; 77% Nylon/23% Spandex is American made and designed to last. The chamois padding is a chafe free, long distance pad that has multiple levels of cushioning. The Top Shelf chamois pad is full of technological engineering. One key feature is the Multi-Level-Pad (MLP) which is a 3D engineered collection of foam pieces that fits snugly within the curves of the legs and torso to create a perfectly smooth and abrasion free chamois padding. Soft silicone leg grippers prevent shorts from riding up and keep pad in place during your ride, providing reliable and lasting comfort. Machine wash, air dry for longest life of the short. Men's Waist (Inches) Small 28-30, Medium 32-34, Large 36-38, XL 38-40, XXL 42-44, 3XL 46-48, 4XL 50-52, 5XL 54-60