... resistance 4. Harmless to body,eco-friendly Silicone Collapsible Cup 1.100% food grade silicone,non-toxic and harmless.2.Ware-resistance ... and heat-resistance,very durable.3.Very good touch feeling,polish.4.High quality ... can be custmized, screen print, embossed, debossed 2013 new style high quality silicone collapsible cup