Vaild Rauk Heavy Tumbler 25cl, Black by Norlan. The Vaild series by Norland was developed to create a blind sniffing experience. The impenetrable black outer wall hides, while the inner wall reveals. Norlan for the perfect whiskey drink experience. The unique double-walled structure offers a cool design and scientific design. The inside of the glass is beautiful and the black outside with a coarser feel creates a luxurious feeling for both the hand and the eye.