Babyletto Universal Twin Storage Trundle BedMaximize Your bedroom space with the Universal Twin Storage Trundle Bed. Perfect for sleepovers with besties, the trundle accommodates a twin size mattress (max 6 high, sold separately), or use it to keep clothes, toys, or bedding organized with additional out of sight storage. Designed with an easy pull out feature and smooth glider wheels. It's sized to fit perfectly under the TipToe Bunk bed but will also coordinate with any standard twin size bed.