Picture shows Old-Growth Redwood. For ultra smoo-oo-th rocking - check out our Porter Thayer Glider. These chairs are beautifully designed and built to last. It is overbuilt to survive the abuses of family and friends and the weather... without maintenance of any kind. They are bolted together for extra strength and protection. For added durability we use only stainless steel bolts and screws. No glue or nails are used.