Discover our Cosmetic jar Aspen 100 ml, 58 special thread, Opal. Aspen is a series of timeless glass jars named after the white stands of the Aspen tree that grows all year round - even in winter. This series is characterised by its rounded shoulders and is a perfect fit for any skincare product. The product is available in flint and opal glass. Each jar comes with a special thread for which Calaso has matching lids in stock. Ask your sales representative for more information.