Though the Nitro and Liquid Nitro have the same frame, the Nitro is a traditional Swedish goggle and the Liquid Nitro is a gasketed variation. By that I mean the Nitro has no gasket and the goggle sits directly in the eye socket. The Liquid Nitro has a liquid silicone gasket for cushioning. The gasket is very comfortable and has a great seal. The shape and size of the goggle part is identical between the Nitro and Liquid Nitro. The lens is a mirrored type. For fans of this goggle, like me, you might want to consider getting a pair of the regular Nitro for racing, and a pair of the Liquid Nitro for training.