silicone computer mouse roller 1made of 100% silicone 2customized size and color 3soft,durable,non-toxic,eco-friendly product Silicone computer mouse rollermaterial: pure silicone up to REACH,7P,CE,ISO,ROHS,NON-P * feature: durable,soft,non-toxic(harmless to body),waterfroof and dustproof. * Silicone mouse you could pressed key on set is keen, the service life reaches above 3 million times. *any ...