Planet Bike’s Borealis gloves are semi lobster claw mitts with removable liners. You can wear the fleece liner gloves alone. You can wear the outer mitts alone. Or you can wear together for maximum warmth. Separate liners & outer mitts help to dry quickly when damp. You can also use your own standard fingerless gloves under the outer mitts. They only thing warmer is bar mitts - which are great by the way.