1. Material: The headguard is made of sponge which is light and breathable. Lightweight that only the weight of an egg, making it comfortable to wear without feeling weight or pressure on the head, allowing you to move without restraint. The fabric is elastic and comfortable to wear 2.Size: One size fits more. The size of the headguard is about 42*20cm, the cap circumference is 58cm at its loosest, suitable for most people 3.Head Protection: The split hotpressing sponge design is a temperature hotpressing, onepiece anticollision sponge, which is designed to protect the head from injury in response to various sports collisions and to fit different head curves, making it comfortable to wear. Effective cushioning, giving the head some cushioning time to minimise head injuries from collisions or falls during exercise 4.Breathable Adjustable: The fabric has a good breathability, not only can keep warm and absorb sweat, but also can eliminate moisture, so that you can move easily and wear it for a long time without being stuffy. The back of the hat has a laceup design, which can be adjusted according to the head circumference, not loose and not tight, the right sports equipment in to play a protective role in sports