In reply to Gaz22:
Answered already, but they're lasers. A great boot which had a disappointing life span. They were brilliant after about the third week of use. They continued thereafter to be brilliant for about three weeks, then they would go floppy and start to roll off small edges. Nostalgia aside, although they were great at the time, they wouldn't be anywhere near as good as more modern boots (Anasazi lace up is very hard to beat).