Why worry with finding a sufficiently manly diaper bag when you can just get the Diaper Vest? It has hidden pockets for bottles, wipes, diapers...and even a changing pad. Available in orange or black in sizes through XXL.

Dad diaper vest - This wearable diaper bag is the hottest innovation in parenting gear since the diaper bag itself. The revolutionary twist on the traditional diaper bag sets the standard for this "hands free" line. Combining comfort and style, you can change, feed, and entertain your child with ease and no one will be able to tell you are wearing your diaper bag.
The pockets are strategically placed for all of the baby-care essentials that a diaper bag would hold. The Vest is constructed with high quality materials for ultimate durability and longevity. It is better looking than most fleece vests available in sporting goods stores but with specific functionality for carrying all of your essential dad gear! $78.00 (via TB Kiddos)

twist on the traditional diaper bag make this "hands free"
pockets are strategically placed for all of the baby-care essentials that a diaper bag would hold (via Jolity.com)

The Diaper Vest is a great gift idea for new & seasoned dads. This cleverly designed vest incorporates ingenious pockets that can be used for diaper wipes, bottles, diapers, etc. There is even a hidden changing pad in a pocket on the back of the vest. (via Momfinds.com)

Useful (if I had a baby) (or a husband) (or is it politically correct to say "partner"?)... (via stephsbest)

handy and a clever and lightweight alternative to diaper bags (via calliopeboutique)

If I had a baby, my husband would love this daddy diaper vest by Dad Gear. For the hip dad, what better way to tote your baby's necessities than this stylish vest. It has pockets for diapers and bottles! It comes in a cargo jacket as well. Finally, a great shower gift for dad. EmmyandAlly.com is a chic boutique-style web store to find designer baby selections.