You can add a safety pin so your packer does not come loose and roll down your leg.;
, Just make sure it is positioned right before you pin it. Check the mirror so your bulge looks right.
 Simply put your boxers and pants on and you're good to go!

, This is exactly the same as a jock strap, except you can put it on and use it under swim trunks with a packer. (You can wear a shirt or a wetsuit top if you have not had top surgery, for transgender men.) Wearing swim briefs over this could be a good idea.
Try a rolled up sock and put it in some tight briefs.
If you wear boxers, safety pin the sock to the inside of your boxers.
Another good method if you like boxers is to get a jock strap and put a commercially made packer in it.
Use a swimmer's jockstrap.
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