PREMIUM QUALITY SHAKER BOTTLE: high quality plastic protein shaker bottle BPA free, special designed stainless-steel ice shaker wire, very good leak proof lid and flip cap. 6 PACK – 6 BEAUTIFUL COLORS: red, black, green, yellow, white and blue , extra 2attachable cups for capsule and powder holder on each bottle, measuring lines500 ml / 16 oz, real capacity up to 600 ml / 20 oz. THIS SHAKER BOTTLE CAN BE USED FOR: very good protein shakes such as protein powders shaken with milk, cold coffee, and other beverages or smoothies, mixed well. Do not use hot water that is above 65 ℃ / 145 ℉ in a shaker, hot liquid will cause air expansion, that will open the lid. CONVENIENT DESIGN: special designed easy grip drink shaker cup for easy hold, and wide mouth for a smooth drink. 2 twist-on cups on bottom of each bottle to store protein powder and capsules, includes capsule organizer. The twisted lid and the flip cap attached to the lid are 100% leak proof. USE IT WITH PLEASURE: with our special designed shaker protein bottle and stainless steel coil you will have an easy time to shake your mix perfectly and will give you a smooth result