Size chart. https://www.zbikewear.com/sizing?lang=en Competitive kits are a number one seller. They feature Italian chamois made by Dolomiti pads that allow 5 to 6 hours of ride time. They feature microfiber fabrics and memory foam with 100 Kg/M3 density on the inside and 65 Kg/M3 on the surface. The jersey fabric has UMC (Ultra Moisture Control) capability and they have at least 50% UV protection and anti-bacterial and anti-odor treatment. The shorts fabric, Power Lycra offers compression to the muscles during exercise and also features 80% UV protection. The weight is 225 grams. The shorts have suspenders made with Italian elastic straps and mesh that keep the cyclist cool and the polyester lycra has a compression effect to prevent fatigue on the cyclist’s thigh muscles. The fit: These are meant to be used by any type of cyclist that wants to enjoy a great quality uniform. Competitive uniforms are the favorite of most cyclists. The cuffs of the shirts and shorts have Italian compression bands with silicone dots on the inside, which prevents the garments from moving out of place. The side panels of the jerseys are made of MESH AIR mesh that allows air to flow to the cyclist’s body. The hems at the bottom of the jerseys have silicone-coated elastics that prevent them from riding up in the waist area.