Spiegelau Beer Classics 4 Piece IPA and Stemmed Pilsner Glass Tasting Set IPA glasses are made from thin glass Pilsner glasses are made from lead-free crystal IPA glasses are crafted specifically for hoppy American India Pale Ales and Pilsner beer IPA glasses keep beer cooler than the average bar glass Honeycomb ridges on IPA glass help keep beer aerated, foamy, and bubbly