Using your Skagerak Selandia Chair Cushion is easy. Just tie it to the seat with the strings provided. It's perfect for outdoor use and can handle different weather conditions. When it gets wet, it will dry quickly on its own thanks to the open - cell foam. To keep it in good condition, avoid sharp objects that could tear the fabric. If it gets dirty, you can gently wipe it with a damp cloth. If you're not satisfied with the cushion, you can return it within 30 days.