The way to find the best CART-Ring size

You can find the video through QR code and Youtube about "How to find the perfect size" below.

Choose Any finger expect thumb to wear a ring

Try to put a comfortable size ring which is not too tight but not spinning

Wear it at least 24 hours to test in various situations

Select the perfect size and input the size through our homepage ( or below 'confirm your size'

We will ship your CART once the size is confirmed

Confirm your size

Let's find what is the best size for your finger.
Keep in mind, it is important thing to monitor your heart with CART solution.

Value is required
Welcome Newcomer