Embodiments of the invention provide a zipper attached safety layer applied between a flexible mat and an edge pad of a trampoline. The safety layer moves with the flexible mat and prevents a user from accidently inserting an appendage into the suspension system (e.g., coiled springs) of the trampoline. Embodiments of the invention further relate to a trampoline comprising such a zippered safety layer and to a method of arranging the safety layer in a trampoline.