How to show the selected value on range input?

Hello there,

how could I show the current value selected from a range input field?
I tried using your demo site and create a product: https://demo.tychesoftwares.com/product-input-fields/product/test-range-sd/

I would like to let users choose their height using the range input, but I cannot see the actual selected value before view the final cart.

Thank you in advance,
nflor