New Balance FuelCell SuperComp Trainer v3 Shoes: Maximum Cushioning and Support The New Balance FuelCell SuperComp Trainer v3 are designed to take your half marathon and full marathon training to the next level, offering exceptional comfort and neutral support. Surface: Asphalt Shoe Type: Neutral Use: Training, Long distance Weight: 271 grams (9.2 oz) Drop: 6 mm Plate: Carbon fiber, full length, Energy Arc Cushioning: FuelCell with 3% bio-based content