There are many manufacturers that slap their logo on a random cup and sell it as their own; not Klein Tools. Klein Tools clearly put as much thought into this vacuum-sealed tumbler as they do on all of their Tools! Everything about it is designed for a tradesman, and they thought of everything.
The Klein Tools 20-Ounce Tumbler (55580) keeps liquid cold up to 12 hours and hot up to 4 hours. Double-wall vacuum insulated stainless steel with a rugged, textured silicone outer sleeve for slip resistance. The unique lid design allows for easy twisting with gloves on or off, while the flip-top lid provides a spill-resistant seal when closed. Secure Tumbler to ferromagnetic surfaces with a removable rare earth magnetic lanyard. Made from BPA-free food-grade materials.