Strong padded neoprene 2 buckle impact vest that is ideal for higher speed watersports like waterskiing, jetskis, kite surfing and wakeboarding. Please not that it is not a lifejacket or a certified buoyancy aid though it does provide a limited amount of buoyancy. 
We only recommended using this product if you are a competent swimmer.   
 
Sizing:
Small - 66cm - 76 cm chest
Med - 76cm - 99cm chest
Lge - 99cm - 112cm chest