Sisu Aero Gum Shield Size:Medium constructed from performance rubber which

constructed from performance rubber which gives a great level of durability and performance

ThermoReg technology keeps you warm in cold conditions

Silicon Injection moulding Punch Zone and non-slip grip backhand

Please note the colour of the stripe on the toe is relative to the size of the socks

Durable and ergonomic design tailored for an active sport

Sisu Aero Gum Shield Size:Medium constructed from performance rubber whichAs invisible and ultralight as the air for which it was named, SISU Aero is the 1. 5 mm high tech mouthguard that started it all. Designed for athletes who prefer to easily talk, breathe and drink during game time (otherwise known as: all athletes), the Aero is revolutionizing mouthguards one mouth at a time. Size guide Small Up to 5' (150cm) Medium 5' 6' (150cm 180cm) Large Over 6' (180cm +)