keeps drinks cold

These tumblers really keep drinks cold! I still had some ice in the cup after letting it sit for 24 hours. They are well made and sturdy. I like that it comes with the 2 lids, 2 extra seals, 2 stainless steel straws and a straw cleaner which really comes in handy for cleaning the straws. Not only do these tumbles work great but they look and feel nice in my hands. I like that the lids have a sliding closure so I can keep my drink protected from insect while using the tumbler outdoors. They are great for poolside, the beach, camping, sporting events or a causal backyard barbeque.