These materials generally do not stretch significantly over time, so they should fit comfortably from the start. How to Check the Fit

There should be approximately 1/4 inch of space at the front so your toes can wiggle freely.

The slippers should stay secure on your feet when walking quickly; if they slide off easily, they are likely too large. Alpha Size Conversion

Once your slippers arrive, perform these quick checks suggested by Shepherd of Sweden and Impakto :

These often feel tight initially but will "pack out" and stretch as the fibers compress with wear.

If you wear a half size (e.g., 9.5), most manufacturers, such as OluKai and Victoria's Secret , recommend moving up to the next full size (e.g., 10).

Many slippers are sold in "Alpha" sizes (S, M, L). According to Dearfoams and Kohl's , the standard conversions are: