ERGONOMIC SLIMLINE DESIGN: contours the shape of your hand for a secure, non-slip grip. Slender yet sturdy, this 500ml shaker cup fits most cup holders, with oz and ml volume markers up to 400ml DETACHABLE STORAGE: compartment for an extra 100ml (35g) of protein powder storage. Screw-on protein bottle base for snacks, powders and capsules, with attachable carabiner clip for your gym bag or keys FLIP-TOP LEAKPROOF:spout guard and airtight removable hinged lid ensures no leaks, drips or spills. BPA-free and DEHP-free, this recyclable shake bottle is freezer, microwave and dishwasher safe POWER MIXER NET: snaps on tightly for a smoother drinking experience. The Slim protein shaker bottle is specially designed to silently shake drinks to perfection with no lumps, clumps, or rattling parts OUR PROMISE TO YOU: Proudly Swedish made and backed by our Lifetime Warranty, all Smartshake protein shake bottles are recyclable and compliantly tested to strict GMP and US/EU food-safety standards