drinking glasses with straw

Straw cups are made from a mix of plastics, metals and glass. Common materials include plastic (often polypropylene), stainless steel (some with recycled content), silicone, and glass.

Capacities vary from small training cups (around 7 fl oz) to large tumblers (up to 40 fl oz). Other common sizes include 10 fl oz, 18 fl oz, 20 fl oz and 21 fl oz.

Common spill-prevention features include leakproof or spillproof and locking lids, weighted or flexible straws for angled drinking, silicone straw valves that regulate flow, and proprietary no‑splash or leak‑resistant straw systems.

Many straw tumblers use double‑wall or vacuum insulation (some also advertise triple‑layer insulation) to keep drinks cold for hours; example listings note long cold retention times. Most are described primarily for cold beverages, though a few models are listed as suitable for both hot and cold drinks.

Many products include or recommend a straw brush — some advise using a brush no wider than 1/4". Handle straw valves and no‑spill membranes gently to avoid tearing. Cleaning instructions vary (top‑rack dishwasher-safe vs. hand‑wash), so follow the manufacturer’s guidance.