The Piper features memory style foam, RYOT Stick Stop silicone pad, lined freshness pouch and durable exterior weatherproof canvas fabric RYOT Smell Safe Carbon Series locks in odours for discrete storage and transport. Pack and Protect with RYOT. The SmellSafe Carbon Series incorporates extensive carbon fibre padding that both neutralizes and traps odours in its pores while our coated weather-proof fabric and moisture seal zipper provide a true physical barrier to keep odours in and the weather out. To re-activate the Carbon lining filters, simply put in the dryer for 5 minutes.