Double-wall vacuum insulation keeps protein shakes cold for 24 hours, hot drinks warm for 12 hours. The 316L food-grade stainless steel BlenderBall whisk eliminates lumps with no plastic contamination. Threaded leak-proof lid survives backpack throws and gym drops. Removable 150ml powder compartment stores a pre-measured serving for post-workout convenience. Wide mouth fits ice cubes and is dishwasher safe (lid only). BPA and phthalate free. 700ml capacity. Available in 8 colours with custom logo laser engraving.