Leakproof Protein Shaker:The small shaker bottle cap has been improved.Please close it firmly with your palm, you will hear a "click" and the cap will be closed properly to better leakproof , Easy to Clean:This 400ml shaker bottle use pp+pe material with stainless steel ball,all the material is easy to clean , Ergonomics Design:The ergonomic design on both sides of the shaker bottle makes it easier to grasp and not slip off , Away from Lumps:Under this small shaker bottle 400ml,it's easy to mix,hope you can slim fast,also this supplement shaker bottles can be used for preworkout/Postworkout , OUR COMPANY:IGOOUO is committed to selecting high-quality materials to bring you a high-quality life. If you have any questions about protein shake bottles, we have 24-hour service for you