Hollis M1 Mask At least 18 years old

At least 18 years old and have a minimum of 30 logged dives

stopping off at Gloucester for our last night before we tackle the famous Putty Road

■ BOTTOM TIMER MODE WITH RESETTABLE AVERAGE DEPTH AND STOPWATCH

DECOMPRESSION DIVE PLANNER WITH ADDITIONAL SURFACE INTERVAL FUNCTION

5inch / 30x48x75cm

Hollis M1 Mask At least 18 years oldVisibility 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.