Organic Travel Cot Mattress 4.5 CM Waterproof Cot Mattress our cot mattress is soft to touch and keep clean. [Tri-fold Design] The tri-fold design of baby bassinet mattress allows you to easily fold up your mattress, convenient to store and travel. The rounded corners is good for universal fit. [Removable Zippered Cover] The outside zipper cover of the tri-fold playard mattress can be removable and wash. Besides, the inner zipper cover of the each pad can be removed to wash. [Non-slip Backing Portacot Mattress] The non-skid gripping dots of this portacot cot mattress ensure the porta mattress to stay in place. It can be also used without a playard or baby sleeping mat when placed safely.