adidas continues to expand on its Ultra Boost Uncaged collection with this limited edition colorway. The Pure Boost Limited 'Silver Boost' features a knit upper dressed in a glitch-silver upper with black accents throughout the shoe and on the Three Stripes branding. The sneaker also boasts a perforated TPU overlay, a Boost midsole for responsive cushioning, a Dynamic Heel Fit system, and a unique nylon lacing system.