These Light Sticks are primarily designed as emergency signalling devices. Each Light Stick lasts for up to 15 hours (green/orange) or 8 hours (white). They come in both green and orange or white colours. To activate just bend, snap and shake thoroughly. Full glow will just take a few seconds. Crib Goch Outdoor was established back in January 2002. Since then Dylan & Pete, along with their staff (me included), have gathered years of experience selling outdoor clothing and equipment. We welcome all ages and abilities, young and old, we take the time to find what you're looking for so that you can enjoy the outdoors like we do. We stock quality brands like Buffalo, Paramo and Fjallraven to name just a few. These are the brands and euipment that you would see the local Llanberis.