Features11. Spliced stretch fabrics, the hat has a good shape and fits the head shape. 22. Add velvet inside and waterproof outer fabric. Keep warm and windproof, not afraid of wind and snow when you go out. 33. It is portable and compact, and it doesn't take up any space to carry it with you, helping you cope with the changing weather of long-distance travel. 44. It fit really well with no stretching or tightness. Enough material to keep your ears warm and can be used under your helmet or hoodie. Keep your head warm during colder weather riding. 55. Fits ly under bicycle, ski, snowboard, football, snowmobile, and motorcycle helmets, our winter caps will keep in place during riding.SpecificationName: Safety helmet cap with inner warm sports capMaterial: nylon, spandex, polyester, polar fleeceCraft: Four needles and six threads. Elastic edgingColor: black, hemp grayStyle: with pierced ears, without pierced earsPackage List1*Hat