That's interesting....11 meters of floss crammed in the cards.
My wife is a dental hygienist, gets tons of samples, but didn't like the floss in the floss cards. (i don't know why) Floss is one of my personal "essentials"....you can sew with it, guy/repair fabric, fish with it, even use it on your teeth! I usually break the sample containers open and carry only the spool. The sample spools are only about 3/4's of an inch wide and weigh practically nothing.