The Takeya Standard Straw Tumbler is crafted with double-wall insulated stainless steel that will keep your drink of choice ice cold for up to 24 hours. Keep every drop inside with the twist-on lid’s splash-proof gasket, creating a snug seal around the lid and the straw. Switch between the standard straw for iced water and electrolyte mixes and the jumbo Tritan™ straw for afternoon cold brews and smoothies. The wide mouth opening makes it easy to refill, the tapered body gives a comfortable hold and the silicone bottom allows for a quiet set down and fits in most cupholders