Plastic drinking glass is reusable and made of medical tritane. TT type of plastic is BPA-free, recyclable, unbreakable when using, 50 times machine washing safe, with high transparency and suitable in temperatures +100 to -15 degrees. Cup is suitable for using as a portable coffee mug. Cups are designed and made in Estonia, also patented under "Töpsi" name. Reusable dishes impact environment less than disposable plastic dishes.