Hollis M-1 Mask dive watch Drop away flex mouthpiece

Drop away flex mouthpiece

Low profile bladder design and made with Patented Bioflex material- a living fabric" that stretches

SIZING - Chest Measurement (should fit very snug):

Spearhead: Stainless Twin Barb Rock Point (847)

Hollis M-1 Mask dive watch Drop away flex mouthpieceVisibility is the most important aspect of any dive. The M1 mask raises the bar for optical quality and distortion free vision. This lens is an extra clear glass which is valued for its attractive appearance and optical qualities. The low iron content produces a higher light transmittance and a reduced green tint inherent in other glasses. This makes the lens distortion free and helps improve color and visibility in low light conditions underwater.