A strap has an extension element and a support element. The extension element joins with an article, such as a bag, backpack, or purse. The support element is secured to the extension element and has a plurality of sipes that enhance the flexibility of the strap. In another configuration, the support element has a central area formed from a foam that is more compressible than a foam forming end areas. In yet another configuration, the support element has a wedge-shaped cross-section.