Glass Shaker Lid x 2pcs（Glass Shaker Lid × 2pcs）

I bought this as a spare lid for the Glass Shaker.
I think the design is well thought out, as it seals tighter than a regular bottle cap. You don't have to worry about it leaking even if you shake it vigorously.
It can also be disassembled, so it can be thoroughly washed and kept clean.