this heel insole includes a layer of soft PU

elastic material with extremely good cushioning

2 millimetres as upper material

Outsole: Lightweight PU Sport outsole with antiviral properties

Triple Layer Support & Cushion System to prevent and alleviate common foot pain

Footbed and Shoe Protector WF-product_size-system__US this heel insole includes aThe Birkenstock Footbed & Shoe Protector is ideal to protect shoes against dirt and moisture. The highly effective, water based waterproofing spray withstands all kinds of weather. This prevents the material from drying out and becoming brittle and maximises the longevity of the shoes. APPLICATION Recommended for: Smooth leather, suede, nubuck leather and textiles. Application: After cleaning, spray the Birkenstock Footbed & Shoe Protector evenly onto