Amyoole 2 Pack Reusable Boba Cup,24Oz Wide Mouth Smoothie Cup,mason Jar Glass Cups with Lids and Straws,Bubble/Boba Tea Cups,Ice Coffee Tumbler 2 colored straws 1 sponge brush(White)

Amyoole 2 Pack Reusable Boba... https://www.amazon.com/dp/B0B3M3BCN7?ref=ppx_pop_mob_ap_share I never have a problem with leaking, but I also don't store it upside-down or anything. As long as the lid is on tight and makes it to and from work in my backpack or lunch bag