Come and Check Our Promo Solutions.Cup used Tritan material, not easy to break, BPA-free, belongs to the healthy material. Ergonomic flip cap, secure screw-on lid. 304 stainless steel mixing ball inside, can be quickly shaken. Hand-in-hand design, comfortable and portable. Large caliber, easy to clean. You can use it indoors or outdoors.This unique shake cup with lanyard is easy to carry wherever you're headed. Always within reach when you're ready to replenish and refuel. These shaker bottles have clearly marked measuring levels. Pre-workout or post-workout, our shaker bottles are a must-have fitness accessory to have in your arsenal. Each one of these shaker bottles for protein mixes comes with a stainless steel shaker ball, so there's no grit or lumps in your shake. Pls check inventory and detailed info with us before placing your orders.