From the product description, check product page for current description, price and availability:

• 4 outdoor beer cups
• BPA Free
• Dishwasher Safe
• 17oz Capacity
• Rugged and Shatterproof

“We love our traditional German glassware from Spiegelau and other glass makers, and drinking beer from a proper glass is important to us. So in situations where glass just wouldn’t do, we were sick about having to drink beer from a red party cup. Rather than complain about it, we decided to do something about it! B Cups outdoor Lager cups are ONLY available from Fermented Reality! B Cups Lager cups are made from a rigid, shatterproof, fully transparent, BPA-free plastic. Your B Cups will have a long life and are even dishwasher safe! Even left out overnight, these cups come clean with a little dish soap and warm water and leave no residual stale beer smell. The B Cups line of cups are the first go-anywhere plastic beer cup set in the world! Beach, boat, camping, fishing, and more!”