Well these are amazing. I am a bigger guy. 58 260 and these a great!!! I have kicked around the idea for about 10 months ever since I seen something like this on a late night infomercial. Couple pieces of advice
# 1 buy them
# 2 put the thigh attachments in front
# 3 leave them a little loose so not to cause too much stress on the elastic or your shirt. They still will do there job they don't have to be tight while standing.

Also something no one talks about on these reviews is pooping! Yes you are going to wear these and at some point have to use the bathroom. Just un hook the thigh hook and leave them attached to the shirt easy-peasy hope this helps. I wish I woulda bought them months ago. I feel so tight and well put together even with shirts a little baggy