Amazon.com | adidas Running Ultraboost 20 Core Black/Core 。Pre-Owned Shoes ? - Carefully inspected — no rips or tears; normal cosmetic wear, slight yellow on edge of boost foam - You\'ll receive the exact pair pictured, so what you see is what you get. - Smoke-free home. - Original box not included Shipping & Packaging ? Shipped securely in compostable, eco-friendly ♻️, tear-resistant bags to provide affordable shipping to all ? Shipping Schedule ? We ship Monday, Wednesday & Friday. Purchases made after 4pm CST will be shipped the following shipping day. ⭐Not sure how the offer system works? ⭐ Here\'s a simple guide: ✅ 0–10% off – Your best shot. Usually accepted quickly; fastest way to lock it in before someone else does. ? 11–20% off – Worth a try. May be accepted depending on the pair. ? 21–30% off – Long odds. Occasionally accepted, but rare. ? 31%+ off – Rarely accepted. Fun to try, but usually a pass. Customer Satisfaction Guaranteed - We take pride in providing smooth, reliable service. - Please reach out to us for any issues, we\'re always here to help ? - Positive feedback is greatly appreciated and helps us continue offering quality products.