The Sun Seeker Fat Tad is in a class by itself. With 20" x 4" tires all around, it can go over any terrain reasonable... grass, mud, packed trails, hard surface roads, etc. It sports a Chromoly Steel frame with both front and rear suspension, 24 speeds, and fully adjustable for riders from 37"- 50.5" X-Seam. This is perfect for those of you who like to ride on the farm, gravel roads, and anywhere other Trikes can't quite roll! Stop by for a test ride on our demo model!