I purchased a sling on Amazon and my chis love it. I initially bought it for my little old man who has bad knees. He loves to go for "walks" and by walks I mean he rides in the sling while I walk. The 2 year chi old loves it too! You simply have to put it on and hold it open and she will jump in and take a nap like a little joey.

This is the one I have.... Alfie Pet by Petoga Couture - Chico Reversible Pet Sling Carrier - Color: Grey https://www.amazon.com/dp/B007FLN0OU/ref=cm_sw_r_cp_api_ZM.Fzb43M6QSF