Product Information SKU: #8817074Supercharge your run with the lightning-quick speed of the New Balance? Vazee Sigma racing spike.Track and field racing spike. Synthetic upper materials. No-sew upper application helps reduce the likelihood of irritation. boa? closure system allows for precise adjustments that promote a custom fit. Bootie construction offers a snug, secure feel. Textile bootie and interior offers a great next-to-foot feel. Thin textile footbed. Eight-spike configuration delivers aggressive traction. Last: RL-2.Imported. Product measurements were taken using size 9.5, width D - Medium. Please note that measurements may vary by size.Weight of footwear is based on a single item, not a pair.Measurements: Weight: 6.4 oz