1> Air Vent Valve System - Maintenance of pressure balance by supplying air to the bottle 2> Leakage Prevention - The Cross-shaped mouth of the straw nipple Even if you turn the cup upside down and shake it, it does Not leak easily 3> Easy to Clean Structure 4> High-quality Silicone - The Soft straw protects your baby's teeth and gums

Please cut it for the capacity of your straw cup. The straw was made a little longer to be compatible with 200ml and 280ml. The straw is made of same material with baby nipples. Babies will get used to straw without resistance. 2 Replacement Straws & 2 Straw nipples for UBMOM Straw cups and bottles.

Bottle Nipple Type: Vented. Material: Silicone. Size: 4.73 Inch X 7.88 Inch X 2.36 Inch , 0.15 Pound. Brand: UBMOM. Date First Available: June 7, 2022. Best Sellers Rank: #38,594 in Baby. Customer Reviews: 5.0 5.0 out of 5 stars 2 ratings 5.0 out of 5 stars. Country of Origin: Korea, Republic of. : B0B34B3R29. Item Weight: 5.9 ounces. Product Dimensions: 4.72 x 7.87 x 2.36 inches.