CROSSFOREST Glass Screen Protector for WALKMAN NW-ZX2/NW-ZX1/NW-F880series | Round Edge | CF-GHWKF88 Using 0.33mm Glass by ASAHI GLASS Co., Ltd (The measured value of about 0.44mm);This made it even more durable and more resistant to cracking The edge of the glass film is rounded and smooth to the touch The thin, silicon layer with excellent transmittance uses silicon made in Japan, so youll never have to compromise image quality on your LCD screen The glass screen protector surface uses a brand water repellant oil repellant coating agent by DAIKIN Industries Inc. (Japan) that also prevents fingerprint marking Cautionbefore using, please sure peel off Hi-Res AUDIO sticker