These are great if you ride in cold weather. I found them extremely beneficial when I went to a Clinton Anderson clinic and about froze my buns off.

Pros: Keep your feet or hands warm

Cons: None

Keep these in your saddlebag or in your coat pocket and slip them in your boot to keep your feet warm. Also try the handwarmers they are awesome too!

Pros: Keep your feetwarm

Cons: n/a

These heat up pretty fast and keep their heat pretty well. I found some at Home Depot. Good for people with low circulation and cold feet.

Pros: Great for cold rides

Cons: There is some bulk depending on how tight your shoes are

Even with cover stirrups your toes get cold up here. The toe warmers keep your toes warm and make your ride so much better.

Pros: Keeps your toes toasty warm even in Northern Wisconsin

Cons: None

These really work well. They keep your toes warm for several hours when it's bitter cold out. I also use the hand warmers.

Pros: Keep you warm

Cons: none