Refund policy
Shopify Refund/Cancellation Clause
I also recommend adding:
Preorder purchases may be canceled for a full refund within 48 hours of purchase. After production begins, cancellations may not be possible. If your order experiences a delay exceeding 30 days beyond the estimated shipping window, you may request a full refund.
This protects your business while still being customer-friendly.
For a streetwear brand dropping in October/November, I would use “Ships in 8–10 weeks” across the entire site. Customers generally accept that timeline for limited-release and preorder apparel, and it gives you room if manufacturing runs slightly behind schedule.