adidas Men and Women's Footwear Size Chart The adidas Special Collections™ Pharrell Williams Boost Slide feature a textile upper and slip-on construction with hook-and-loop strap. Textile lining and insole. Synthetic outsole. Imported. This item may ship with an attached security tag. Merchandise returned without the original security tag attached or a damaged tag may not qualify for a refund. Weight of footwear is based on a single item, not a pair.