The best shaker made of metal: mantrafant Guru Blender PRO made of stainless steel Love your workout? We do too! Highest quality. Leak-proof, robust, leak-proof. Your new Mantrafant Guru Blender PRO is a metal shaker made of stainless steel that mixes your protein powder creamy without a “blender ball” with integrated turbo mixer - guaranteed without chunks. It is 100% BPA-free and sustainably produced without phthalates and thanks to +1 planted tree per shaker, you are even doing something good for you and your environment ✔ 100% LEAK-PROOF - Absolutely tight twist and flip top closure, highest quality and workmanship out of conviction ✔ IN SECONDS - Creamiest protein shakes in seconds, thanks to the integrated shovel mixer in the beaker ✔ SUPER LIGHT & DURABLE - Made to the highest standards, by professionals for professionals.