Weighing in at a scant 10g each, our carbon fibre beer mats are the lightest and most aero of their kind.  After a long day in the lava fields, beer tastes better on carbon.  Our beer mats are sold in pairs.

"I find I can save 6 watts when consuming my beer from a Cyclespeed carbon beer mat"
The Crank, (actual quote, results may vary, beer mat may not actually save 6 watts).