The Nike Zoom Celar 3 is designed for the 100-400 meter track runner looking for a lightweight, high performance competition spike. Internal innersleeve construction with an outer synthetic shell offers a fast, sleek design. Compression-molded, contoured Phylon™ midsole. Flexible, yet supportive Pebax® plate with five removable pin configuration. Injection molded sharkskin heel pod provides added traction. Wt. 6.4 oz.