straw plug

Most silicone straw covers fit standard 9–11 mm straws; some listings list a straw cap diameter of about 1 cm (0.39").

Available dimensions vary: small plugs around 0.98 in (2.5 cm), cup sleeves about 2.95 × 1.69 in (7.5 × 4.3 cm), and specific measurements such as a 1 cm (0.39") straw cap, 2.5 cm (0.98") square plug length, and a 2.2 cm (0.87") round plug.

Some sets include round leak stoppers and square spill stoppers in addition to a straw cover and a cup sleeve.

Most listings specify silicone (including FDA-grade silicone in some cases). One listing also mentions PVC-coated polyester alongside silicone.

Care instructions vary: many are labeled dishwasher-safe, others recommend hand washing or spot/wipe cleaning, and a few listings don’t provide care details.

Pack counts vary by listing; common options include 3-piece, 4-piece, and 6-piece packs.