I am all for wearing snake protection. I never did until a few years ago when I realized that I was now old and slow. And I hope you find something for your son you are both confident with.
I just thought I'd share some statistics from a snakebite survey in 2016....
The most common site of injury was the distal upper extremity, with 4884 (44%) of snakebites affecting the wrist, hand, or fingers. In the lower extremity, 1751 (16%) snakebites occurred in the knee or lower leg, whereas 3351 (30%) of snakebites occurred in the ankle or foot. There were 2423 (22%) patients admitted as an inpatient, and <10 (0%) patients died.
Good luck and keep an eye pealed!