Come and Check Our Promo Solutions.This shaker bottle is made of high quality double-walled stainless steel with a stainless steel mixer ball. It has a large capacity of 25oz. Uses 316 surgical-grade stainless steel ball wire whisk. You can shake and mix anything you want with ease,like protein powder,supplements,milk shake,smoothies and more.Screw-on lid creates leak-proof seal,and flip cap snaps securely shut to keep contents contained. Loop top for easy carrying. Wide mouth makes it easy to add mix scoops and liquids. Pls check inventory and detailed info with us before placing your orders.