Oasis is perfect as a stemless for serving wine and features innovative and elegant touches such as ergonomic grooves on the bottom for a more comfortable hold. Those grooves also serve as a way to channel water away for less staining after dishwashing so you spend less time wiping away water marks and more time with your guests. Bold Drinkware is constructed from the highest quality premium polycarbonate and is built to last. Features: Luxury Polycarbonate