Whatever the session, the Series 3 Flip keeps up. 100% leak-proof - so your bag, your kit, and your focus stay exactly as you left them. Vacuum insulation that keeps drinks cold way beyond the day. A silent rubber base. A hidden stainless steel straw with an antimicrobial nozzle that stays fresh between cleans. 90% recycled stainless steel body. Made to last. Easy to clean with the attached brush. Eight new shades. Find your colour. Find your flow.