Nothing says you're in the tropics like that first glimpse of a palm tree!
These markers measure approximately 3/8" (10 mm) long by 1/4" (6 mm) wide, and weigh less than a gram.
They are shown on an 8 mm ring and a 12 mm lobster clasp. The 6 mm ring comfortably fits knitting needles size US4 and smaller. The 8 mm ring comfortably fits knitting needles size US6 and smaller.