better insulation rating and about half the weight... More things to ponder...
Don't forget about comfort, the foam ones may have a higher insulation rating, but are not as comfortable as the air/foam combos.
@withered_preacher started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Don't forget about comfort, the foam ones may have a higher insulation rating, but are not as comfortable as the air/foam combos.