DetailsThis Coghlan's Zipper Pull includes a general purpose compass and Fahrenheit and Celsius scale. Wind-chill chart on back. Sturdy plastic housing. Slip on ring for attaching to zipper, pack, etc. Help yourself or others be prepared with our Zipper Pull! To see the complete line of Coghlan?s camping gear, check out our new site dedicated to all of Coghlan?s more than 450 items here.