Flasks at CKB Products - 8oz Discount Hip Flasks by Top Shelf Flasksô Stainless Steel 8oz Hip Flask with screw down cap. This polished-finish discount flask measures 5-3/4" x 3-5/8". Each discount flask is individually leak tested for quality assurance! Lifetime warranty. Individually gift boxed in plain black box for easy distribution. Buy 1 or 1,000, our hip flasks and discount liquor flasks are within any budget.