COMFIER Cordless Knee Massager with Heat,Red Light & Vibration Knee Brace

Why it's worth it

The COMFIER is a cordless heated wrap with three temperature steps, red light and three vibration levels, and it weighs about a pound and a half. There's no air compression here, so think of it as a treatment for stiff, achy knees rather than swollen ones.

Three heat levels cover the range you'll actually use. The low setting sits at 105°F, which is gentle enough for thin or sensitive skin. The middle step, 122°F, is where most people will live day to day. The top setting reaches 140°F, and that one deserves short bursts rather than a full session. Being able to step down is more useful than being able to step up.

At about 1.4 pounds, you'll forget you're wearing it. This is the lightest dedicated knee wrap in the lineup, and it's the one we'd point you to for desk use. The 3,000mAh battery gets you through a string of short sessions before it wants a cable. Strap it on between calls, slide it back into the drawer when the knee settles down.

From our review of 7 heated compression knee massagers, by Eleanor Vance, Health & Beauty Editor

What we like

• +Three heat levels cover the range you'll actually use
• +At about 1.4 pounds, you'll forget you're wearing it
• +The ten-minute auto shut-off keeps things safe
• +Red light is a bonus rather than the reason to buy

What to know

• –There's no air compression, only vibration
• –Ten minutes is a short session