HD Polarized Lens Sunglasses Anti-Blue Ray Hydrophobic COLOUR:SILVER * Easy to use: Roll

* Easy to use: Roll and insert into boot

* Heavy-duty zippers

WEIGHT AFTER FILLING: APPROX 15kg (filled with water) or 20kg (filled with sand)

Socket 1/2 inch

HD Polarized Lens Sunglasses Anti-Blue Ray Hydrophobic COLOUR:SILVER * Easy to use: RollHD Polarized Lens Sunglasses Anti Blue Ray Hydrophobic FEATURES: * Shields sensitive eyes for more comfort and better protection while ensuring good visibility in strong sunlight * Helps diminish the glare of the sun * UV400, Blocks out UVA, UVB and Blue light * HD Polarized. Provides incredibly clear, glare free vision * Helps prevent squinting * Makes driving safer and improve outdoor sports performances * Allows wearer to see into the water more