The Wolfman Peak Tail Bag WP is a 6.5L waterproof, rack-mounted motorcycle tail bag with an 840D nylon exterior and RF-welded seams. MSRP is $169.99. (Story and photos by Moshe K. Levy, aka Moto Mouth Moshe)

Wolfman?s Peak Tail Bag WP provides a compact but versatile storage space on any motorcycle with a dedicated luggage rack. Its black wedge-shaped exterior is constructed of 840D nylon TPU (thermoplastic polyurethane) laminate with radio frequency-welded seams. The ?WP? in the name refers to Welded Product, though the Peak is also waterproof. It has a reflective yellow Wolfman logo accent on the narrow side, and a matching yellow bungee on top.

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Beefy YKK water-repellant zippers with oversized plastic pulls allow access to the matching bright yellow interior, which features an integrated zippered mesh pocket on the top lid?s underside. Total capacity is 6.5 liters, which is plenty of room for food, hand tools, and basic rain gear. Overall, the Peak measures 10 inches long by 6 inches high, and its width narrows from 8 inches in front to 5 inches at the rear. Four robust straps allow for mounting to the motorcycle?s rack (it?s not designed to be mounted directly to a rear fender), and the bag features a non-skid base attached by hook-and-loop to the Peak?s bottom, which keeps it from shifting during riding.
A bright yellow interior makes it easy to find small items.

Over a 5-month testing regimen, I exposed t...