These have been on my backpack for three years. No hiccups, perfect function. No breakage. I can’t say the same for el wire or other LED strips I’ve used.

UltraPoi - UltraWire - Multi Color String Lights for Bike, Camping, Festivals, Safety, Emergencies - Portable Battery LED Strip - Better Than El Wire https://www.amazon.com/dp/B00K9XH4SE/ref=cm_sw_r_cp_api_i_M-foDbM5GFVR5