I use Polar Hands for ATVs & snowmobiles. They work great, although a little tough getting the velcro to seal off good around mirror mounts, front brake reservoir and other junk on our handlebars. I have ridden 30 miles at 25°F without gloves with no problem, but light gloves will make it a bit more comfortable.

Ride Safe, Dennis Triumph, it's how I live and what I ride.