This Jock is a great fit for most packers and StPs. Packer not included. Small packers like Small Pierre/Archer might not fit great in here as the hole is a little on the big side. 

• Reinforced O-ring stretches to accommodate most packers
• Interior panel covers your device but is split so you can use it with StPs
• Soft, stretchy and comfortable
• 95% Cotton, 5% Spandex

Packer Gear does not list inch sizes so this is our best estimate. They are pretty stretchy but you do want them to fit snuggly. Waistband fits aprox. sizes:

• XS/SM = 25 -29"
• MED/LRG =  29- 34"
• LRG/XL = 32-42"
• XL/2X = 40-43"
• 2X/3X = 42-46"