This BYO Messenger Lunch Bag will keep food hot or cold for up to 4 hours and is great for carrying you lunch on the go, especially on a bicycle. It features an adjustable bicycle attachment, making it easy to cycle while carrying your lunch. It features a front pocket to hold cellphone or keys, a front flap that folds over the pocket, and secure internal zip closure to keep food insulated. There are two options for carrying: quick grab handle or long crossbody strap featuring pull ring for quick length adjustment. Made from stretchy neoprene (the wet suit material).