I bought those straps for moving heavy things easily. They are amazing! We have been able to lift and move things so much easier and every time we use them, my girlfriend and I comment on how it was the best money spent. I have included the link for the exact ones we have in case someone is considering them. You won’t regret it!
Forearm Forklift Harness 2-Person Shoulder Lifting and Moving System for Furniture, Appliances, Mattresses or Heavy Objects up to 800 Pounds, Orange https://www.amazon.ca/dp/B011RZDAKS/ref=cm_sw_r_cp_api_glt_i_VFBR6J3B0ZTB0QV7JF38
Make these out of webbing or ratchet strap. I use it all the time even just around the forearms. Leaves the hands free for stabilizing.
Using this method my wife and I are able to move the deepfreeze up and down narrow stairs without issue.
https://www.amazon.com/Forearm-Forklift-Harness-Lifting-Appliances/dp/B011RZDAKS
This is the one shown in OP’s post.
I actually put it in my amazon cart yesterday after seeing it on here.
Forearm forklift + a friend.
https://www.amazon.com/dp/B011RZDAKS/ref=cm_sw_r_apa_i_M6AX4ETFF8W4ZVDCBHW7_1
Seriously, they work.