Don't let this simple design fool you. We've overbuilt the hell out of this sleeve including ultrasonic seam welds, durable exterior softshell fabric (just like the stuff in mountaineering jackets), and low pile brushed fleece lining.
The exterior fabric and interior fleece are made from recycle-ready poly, the brushed aluminum buttons can be tossed in your recycling bin with your soda cans, the sonic welds use nontoxic glue, and the string can be reused to tie your shoe in a pinch. Who could even THINK of putting a MacBook Air™ in anything less?
Timbuk2 - Steve Sleeve