Joined: Dec 2004
Posts: 12,551
Likes: 797
From: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, Catrike Speed
The patch may cause skin irritation (rashes, red spots, etc,) and you may have problems with it falling off when you sweat. Gel is a bit more fuss, but without the problems associated with the patch.