Swurfer is a stand-up swing for both kids and adults
Costway Saucer Tree Swing Surf Kids Outdoor Adjustable Swing Set w/ Handle - Walmart.com
Amazon.com: Swurfer Kick Stand Up Outdoor Surfing Tree Swing for Kids Up to 150 Lbs - Hang from Up to 10 Feet High - Includes 24" SwingBoard, UV Resistant Rope, & Handles,