b.box leak-proof straw tube drinking cup special straw with cleaner set

Product Features:

• Equipped with two gravity sippy cups to replace the straw and a straw brush
• When the straw is worn out, just replace the new straw to make your b.box sippy cup more durable
• When brushing the straw, push the cleaning brush into the straw and gently pull it out
• When replacing the straw, use your thumb to pull it down from the bottom of the straw and insert the new straw into it.

• Material: Straw: Food grade silicone; Gravity ball: Stainless steel
• BPA free, PVC and plasticizer