Mainstays 30oz Insulated Water Tumbler with Lid & Straw
Stay refreshed all day with this 30oz Mainstays water tumbler. Built with double-wall vacuum insulation and durable stainless steel, it keeps your drinks ice cold or piping hot for hours—without sweating. The 2-in-1 lid and matching straw make it perfect for sipping or gulping on the go.
30 oz capacity – great for water, smoothies, iced coffee, and more
Double-wall insulated – keeps drinks cold or hot longer
Durable 18/8 stainless steel – built to last
2-in-1 lid + straw – sip or chug, your choice
Cupholder-friendly – fits most car and treadmill holders
