MiniComp - Zipperpull Mini Compass with Split Ring | Easy-to-Read Compass for Jacket, Parka, or Pack CUSHION-MOUNTED - Compass is cushion-mounted and impact resistant. Provides at-a-glance direction. LIQUID-FILLED LUMINOUS COMPASS - Compass stays luminous for up to an hour after being exposed to light. Perfect for low-light conditions. RULER ALONG SIDES - Inches and centimeters ruler included on sides for measuring map distances. SPLIT RING INCLUDED - Attach to your coat, parka, pack. Anywhere you'd like. EXTREMELY LIGHTWEIGHT - At just 0.4 oz, MiniComp is lightest compass of it's size.