1. Soft and Comfortable: The helmet pad is made of a special sponge cushion with a cushioning structure on the top and a supporting structure on the bottom. It has a double layer design and is comfortable to wear for long periods of time. 2. Three Piece Design: The helmet sponge lining is designed with three pieces for easy installation and removal. It can be cleaned and dried quickly. Easy to wear and tear down. 3. 24 Hook and Stickers: The helmet padding kit comes with 24 round hook and stickers, support DIY, you can install the lining system as required. 4. Multiple Applications: These special sponge lining pads can be widely used in scooters, skateboards, bikes and sports helmets, versatile and practical. 5. Compatible: The memory foam pad fits greatly inside for ACH, for MICH, for FMA and for EXF helmet and provide all day wearability. The style makes them super comfortable and adjustable.