This HITWAY BK6SL Electric Bike features 20 x 3.0-inch puncture-resistant fat tires, perfect for urban exploration or off-road adventures. The frame is constructed from durable aluminum and it is a folding bike design. It is equipped with a 36V/13Ah battery providing a range of 50-100KM, powered by a 250W motor and a 7-speed drivetrain. This bike is designed for adult riders. The product also mentions a 'Speeder Bike T-Shirt' which might be an unrelated item or a bundle accessory. The t-shirt is made of 100% Ringspun Cotton with a soft touch and printed text design. It features a crew neck and short sleeves, and is 100% officially licensed with a fabric weight of 153gsm.