Monroe

The key to a good slip on that will work for most is a  wide forefoot band, having the coverage extend up close to the ankle, adjustment at mid-foot to snug it up, and a slight heel lift.  This slide has almost all those features so it is a good choice for a slide.  In addition, it has a nicely cushioned heel which you can see in the photos.

• Leather upper
• Buckle adjustment at mid-foot to snug up fit
• Fits to size in length
• Lots of coverage across foot to keep it in place
• Very grippy sole