COMFY&STURDY: Comfortable airflow back design with thick but soft multi-panel ventilated padding, gives you maximum back support. Breathable and adjustable shoulder straps relieve the stress of shoulder. Foam padded top handle for a long time carry on. Divoom APP: IOS/Android phone and tablet compatible to allow anyone to use this device. The Divoom app provides a world-class pixel gallery with over ten thousands of pixel works for our fans . Integrated into the community, easy to access to communicate and share pixel art design with over 1000+ pixel lovers in community. Perfect gift for Halloween, Thanksgiving and Christmas!