• 50 pieces Sensor Adhesive Patches.Enough quantity will meet your different sports.
• The sensor covers are very easy to use. you just need to stick it on your skin.
• Premium breathable material dries quickly and keeps the sweat and water from loosening your device.
• The size is about 7.4cm/2.91 in diameter. They have strong waterproof.You don't need to worry about shower, rain, swimming.
• It won' onto your sensor but protect around it well, in case you need to change the patch, it brings no damage to the sensor.

50 Pieces Sensor Cover Patch