Groomsmens Gifts - Premium 4 oz. Engravable Leather Wrapped Hip Flask. This stylish, contemporary hip flask is leather wrapped and includes a chrome plate on the corner that is perfect for engraving. You can add a personal touch to any gift, a gesture the recipient will never forgot. Each flask comes complete in a gift box, holds up to 4 oz. of your favorite beverage and features an attached hinged screw on top.