The Kickbak tumbler from CamelBak comes with a rigid double walled and vacuum insulated construction such that it keeps the drinks frosty for up to 8 hours. The lid is spill proof and facilitates both sipping and chugging. The base fits in most cup holders but the tumbler also has an ergonomic structure to hold it easily by hand. Once opened the lid snaps into its place and stays out of your face.
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