... Silicone Rubber Computer KeyboardsAdopted completely sealed design, environmental protection, non-toxic, waterproof, dustproof, anti-acid and anti-alkali, shockproof, the keyboards ... - Material: made of water resistant and dustproof high quality silicone rubber - 109 keys, standard QWERTY layout - Advantages over traditional ... 50-90 g - Service life: 15 million times Silicone Rubber Computer Keyboards