They work great on doors and windows

This allows improved air flow

6mm wide x 92mm deep

The caps from WCC are made in great quality and are adjustable with a snapback closure

zanheadgear half mask neoprene woodland camo 7OM They work great on doorsZanheadgear Half Mask Neoprene Woodland Camo The ZANheadgear Neoprene Half Face Mask offers full coverage for the nose, chin, and cheeks with stretchy, warm, and water resistant 2mm thick neoprene. Featuring a hook and loop closure for adjustability, it ensures a great fit and can be used with or without a helmet. Made of 70% neoprene and 30% polyester, this mask provides both comfort and durability. Features: Full coverage of nose, chin, and cheeks