Length: 19.7-29.5 inches/50-75 cm, adjustable cap fit most adultsSoft and Breathable: our helmet compatible with elderly head protection adopts quality cotton and polyester, comcompatible withtable to wear and easy to clean, the inside material is mesh, soft and breathable, with high elastic sponge filling, can effectively absorb shock and reduce damage caused by head impact, offering you an effective head protectionExtended Hook and Loop Design: this anti fall head protection helmet adopts an extended hook and loop design, making it easy to use, and the adjustable range is increased, which can be stretched and pasted repeatedly, allowing you to adjust it to the most suitable size compatible with the head circumferenceThoughtful and Practical: the top of this protective cap compatible with head is hollow, so you will not feel stuffy even in the hot summer, the adjustable strap makes it more convenient to fix and use, providing you with a nice wearing experience while helping to keep your head safeMultiple Functional: our head protector compatible with adults can not only offer protection to the elderly with limited mobility and get head injuries due to falls, but also can avoid secondary head injuries compatible with patients, practical and multifunctional