I talked to a YSL SA at the Costa Mesa, CA boutique named Jeremie. I had wanted to get some background info on the Cabas Chyc. I told him I really liked the bag but am torn because I like the option of putting on my shoulder sometimes. He told me that for standard colors the boutique sells the medium size with an optional removable strap. He sent me photos of it and you can even wear it crossbody. Just wanted to let you guys know. I don't know what other colors also have the strap but black for sure. (Maybe brown?) Seasonal colors won't have this strap. Anyway, hope this helps you may any decision. I don't think department stores have it. It's only something special the boutiques provide. You can order through Jeremie at YSL Costa Mesa and he can have it shipped to you. It's the same price for the bag $1990. Also not sure if this strap can also be given for the large but you can ask him that too. Here's the number at the boutique: 1- (714) 429-0101 Disclaimer - These photos are from him. I don't know how tall the other SA is in the photos carrying the bag. But I told him I was 5' 6" and he told me the medium would look the best.