20 hours of trail work in a one-year period (December - November) and a t-shirt is yours. See your favorite trail boss for more information!
One thing to note: The shirt policy may be changing after the 2008 year (ending just before the Fat Tire festival)
Anyone can do trail work, including non-members. (Although the SWAMP work shirts may be limited to club members)
Killer trails that are clean and ready to ride is the benefit to everyone.