He figured the bags must have been mine—they were still unopened.
Amazon has a 30-day return policy for unopened merchandise.
Krups blade-free can openers can sometimes be found at yard sales and in thrift shops or on websites like Craigslist or eBay, but very rarely can you find one that's been unused or unopened.
Until recently the vast subject of inter-metallic compounds has been an unopened book to chemists.
He figured the bags must have been mineâ€”they were still unopened.