At GRAiL, we offer a guarantee of size and return/exchange for 30 days after product arrival.

For size changes or returns/exchanges due to initial defects or damaged goods, please contact us within 30 days of product arrival.

【Warranty Coverage】
・Initial defects or damaged goods
・Discrepancy with the size listed on the product page

【Not Covered by Warranty】
・Returns or refunds due to customer convenience
・Products that have been 31 days or more since arrival