1. Foodgrade silicone material: This 88key electronic rolling piano is made of quality, ecofriendly silicone keyboard material. It is nontoxic, wearresistant, soft, and durable, and has received FC product quality certification. 2. Children's portable rolling piano: The handroll piano features builtin stereo speakers and can be rolled up for easy portability. It's for travel, outdoor use, home, or school—take it anywhere and start playing anytime. It can also be connected to external speakers or headphones to avoid disturbing others. 3. MIDI function: With the MIDIenabled folding piano, you can connect to various smart devices like computers and tablets to create your own music. Enjoy playing music games like GarageBand, Piano, and Pop Piano, making piano learning more fun. 4. Multiple playability: The 88key rolling piano for adults offers 128 tones and rhythms, 14 demo songs, and functions like recording, editing, playback, sustain, vibrato, teaching, and chords. It provides a fun way for beginners to meet their practice needs.