Ready, sip, go.

These collapsible wonders are making all of our sustainable dreams come true. Every cup is made from recyclable materials that are safe for enjoying both hot and cold drinks on-the-go, and, bonus, it's microwave friendly. (Tip: Be sure to to remove all plastic components—lid, collar, and heat sleeve—before microwaving.) Oh, and did we mention you get a 12 oz. and a 16 oz. cup in this set? The larger one even comes with a reusable straw that folds up inside for simple storage. When you’re done sipping, go ahead and pack it down into a leak-proof disk for easy transport—or toss it in the dishwasher so it’s ready for tomorrow’s smoothie.