The present disclosure describes, among other things, a device that may include an exterior shell including at least one of an open cell foam, a closed cell foam, a foamed resin, and an inflatable bladder. The device may include a personal electronic device receptacle configured to removably receive a personal electronic device. The device may be configured to substantially enclose and protect the personal electronic device within the personal electronic device receptacle during physical activity including at least one of rolling the device, throwing the device, kicking the device, and striking the device against another object, and enable interaction with the personal electronic device while the personal electronic device is substantially enclosed within the device.