The 100% nylon Omni-Tech Mini Oxford fabric is waterproof and windproof. This is a great hat for rainy weather. The breathable seam sealed hat has 100% polyester mesh lining and nylon Perfecta Cloth undervisor. The brim measures at 2 3/4" to protect you from the rain and sun. The hat can adjust to fit via the velcro strap inside. Available color: Black and Tan. Available sizes: Small/Medium and Large/X-Large.