Mules is one kind of slippers which is more popular because it is slip-on design for quick and easy on and off.Let me tell you how to make mules.

Fristly,the bulk material upper/lining/sock should be laminated with 2mm-3mm foam and nonwoven.

Secondly,all laminated material will be cutting knives one by one,including insole foam.

Thirdly,the seperated upper/lining/sock material will be stitched together but at the toe parts about 10CM won't be stitched.

Fourthly,the outsole will be stitched with insock.

Fifthly,turning the whole mules from 10cm opening.

Sixthly,puting insole foam into mules from 10cm opening and stitches this 10cm opening.

The last step is that puting them onto needle detector to test,then pack all of safe mules.