The Premier 4 was created for riders who want a versatile mountain bike. Built with a lightweight and durable AL6 frame with modern geometry for a more comfortable leisure ride, the Premier 4 is a reliable companion for the day-to-day use and sport. . The Premier series utilizes Polygon’s new Wheel Fit Size System whereby each frame size is paired with the wheel size that best fits the rider and sets them up for optimal efficiency and power transfer. Its simply logical to pair 29˝ wheels with larger bikes, and more proportional, better-fitting 27.5˝ wheels for smaller bikes. Frame S, M, L feature 27.5” wheels and frame L and XL come with 29” wheels.