This adorable knitted owl design hat will have your head warm in no time each knitted hat has pockets designed to hold a reusable click and heat gel padto heat simply hold the metal chip inside the hat pockets between your thumb and forefinger and bend gently until it clicks the solution will crystalize and release heat massaging the pack will help maximise the heat the hat will stay warm for about 45 minutes you can reactivate the gel pack when cold and hard by placing in a pan of boilin