Our full mask overlay by Red Dragon is designed for HEMA and adds an extra layer of protection to your fencing mask. The back of head protection features a Series of articulated rigid plastic plates allowing for a combination of protection and mobility. The heavy-duty cotton hood is padded to absorb impact from blows and features a contoured hard plastic plate to protect the throat. The 8 ventilation holes (4 on each side) provide excellent heat release without sacrificing protection. Features and adjustable webbing strap with Velcro attachment for a comfortable fit. Mask not included. Small - circumference at rim: 29" (74cm) | neck protector length: 15.75" (40cm) | depth: 6" (15cm) | weight: 1.7 lbs (808G) medium - circumference at rim: 30" (76cm) | neck protector length: 15.75" (40cm) | depth: 6.3" (16cm) | weight: 1.9 lbs (860G) large - circumference at rim: 30.75" (78cm) | neck protector length: 15.75" (40cm) | depth: 6.75" (17cm) | weight: 2 lbs (920G) x-large - circumference at rim: 31.5" (80cm) | neck protector length: 15.75" (40cm) | depth: 7" (18cm) | weight: 2.1 lbs (938G) all dimensions are approximate and may Vary from piece to piece.