Are closed shoes or a heel strap mandatory in your workplace for safety reasons? The Kay model by Birkenstock has an adjustable strap on the instep and a foldable heel strap. The strap keeps your foot firmly in the foot bed. If you fold the strap over the instep in your free time, you can quickly get in and out of your sandals. The leather upper layer protects your foot from injuries caused by bumps and chemical substances. The Super-grip sole with deep indentations prevents falls in the working environment and is grease and oil resistant.
These black natural leather Birkenstock Professional slippers with black non-slip sole also have a soft foot bed.
The soles are made of a flexible material that allows the feet to relax.
The Kay mules are not only suitable for professional use, but they also make excellent footwear for diabetes patients with foot issues or for people suffering from foot problems such as heel spur.
By default, the Kay mules have a narrow foot bed. From size 43 the wide foot bed is the standard.

Remember that Birkenstock uses large sizes. Usually you need a size smaller than your regular shoe size.
Also available in white with a blue sole and black with a red sole.