I've been using them for 2 years with no problems at all. I have several thumbs as my thumb varies quite a bit depending on when i'm bowling or how often i've bowled. Also as my thumb shrinks while bowling i don't have to use a ton of tape
Castaway's Bowlers Pro Shop
Calumet City,Il. 60409
(708) 862-1602
Arsenal: Aftermath,Bank Pearl,Raw Profit x 2 ,Shred-it x3,Sideways x2,Profit x2, Clutch Pearl,Double Clutch Pearl,Heist Pearl,Hype urethane,Missing Link Pearl,Epicenter, Desperado,Mars, Grenade Pearl,Golden Globe
http://s485.photobucket.com/albums/rr220/stormed1/My%20Arsenal/Bowlingboards.com