US footwear firm Skechers has signed a worldwide endorsement deal with former American Football quarterback Joe Montana to promote its Shape-ups fitness footwear until 2010.

The endorsement deal will span all media, including print, television, and outdoor, a statement said.

"I truly believe in this product, which is why I'm looking forward to working with Skechers and sharing my Shape-ups experience with the world," said Joe Montana. "I spent 16 years on a football field -- it was an amazing time, but also pushed my body to its limit. Since I started walking in Shape-ups, I have noticed an improvement in my core strength, and the pressure on my back and knees has eased."

Shape-ups are technical walking shoes designed to promote weight loss, tone muscles and improve posture with a kinetic wedge midsole that simulates walking on a soft surface like sand.