The Icewall® Cooler keeps your food and drinks cool, fresh and healthy. The 20 Litre Cooler holds up to 30 cans, has triple-layer insulation and premium-quality Sunshield™ outer fabric to reflect the sun’s heat rays. The cooler comes with a large Icewall® chiller units. They contain purified non-toxic saline water that freezes at lower temperatures and lasts longer. Freeze the Icewall® chiller unit overnight ready for use, then slide it into the strap holder. It can be positioned upright or on top of the contents.