Thunderwear Shoulder Holster are so comfortable that you actually forget you have it on.  It adjusts to fit everyone with up to a 58 inch chest. ( the holster is factory set for chest sizes 42 - 48" with no adjustment  ( custom orders welcome at no extra cost )

Extra mag pouches are standard equipment ( holds 2 mags ) 

The adjustable Rention Strap has a 220 LB rating, yet a push of a button and the gun is in your hand.  

Velcro straps attach to your belt on both sides to keep the holster flush up aganst your body.