Kay SL super outsole, by Birkenstock, narrow, cat, size 39

The Kay SL offers all the advantages of the BIRKENSTOCK classics Tokyo & Boston combined in one model. The upper instep strap can be folded back if necessary and then provides additional support as a heel strap. The super outsole is slip-resistant, rolls ideally and is also oil and grease resistant. Its EVA midsole cushions every step. This high degree of flexibility and surefootedness is particularly in demand in the medical sector. All super outsole models are tested according to the specifications of EN ISO 20347:2012 with regard to slip resistance.

Features of the Kay SL in Birkoflor®

• Anatomically shaped cork-latex footbed
• Upper material: Birko-Flor®
• Details: individually adjustable metal thorn buckle
• Cover sole: suede leather
• Sole: cushioning EVA midsole with slip-resistant, oil and grease-resistant rubber outsole
• Slip resistance tested according to EN ISO 20347:2012 (category SRA)

Upper material: Birko-Flor®

Birko-Flor® is a skin-friendly, tear-resistant and easy-care synthetic material used exclusively by BIRKENSTOCK.

Inner sole: Leather insole

The skin-friendly, flexible leather cover sole gently nestles against the foot and adapts to its contours. The open-pored and thus particularly breathable surface enables a pleasant foot climate even during heavy physical activity.

Footbed material: Cork

Cork is a renewable raw material obtained from the bark of the cork oak. The natural product is heat insulating and has very good cushioning properties.

Outsole: Super outsole

The super outsole consists of two components: an anti-slip, oil- and grease-resistant rubber outsole and a shock-absorbing midsole made of lightweight, flexible EVA plastic.