NO SHAKING. NO CLUMPS. BETTER TASTE – powerful vortex mixer with patented X-Blade technology for super-smooth protein shakes. No Solids BATTERY-POWERED MOTOR – the new PROMiXX Original is powered by 2xAA batteries (not included - opt for high quality alkaline), so that you mix on-the-go! DURABLE, EASY-TO-CLEAN BOTTLE – including measuring scale (ml/oz), it’s tough, odourless, BPA/DEHP-free, and easy to clean – add warm water and detergent, turn on, and let your Original electric shaker bottle clean itself. DESIGN. FUNCTIONALITY. PERFORMANCE – designed in the UK after six years of passion and product evolution: jaw-dropping in looks, innovative in functionality – and tested, recommended and prized by athletes the world over.