Hip Flask Celtic Bands Pewter. We off this Pewter Hip Flask in a 4oz and 6oz (170 ml) with double Celtic bands. This Pewter Hip flask would be a great gift and is finished to a very high standard of British workmanship. All our Pewter Flasks are presented in a gift box including a silky draw-string bag for protection. The Pewter Hip flask with Celtic Bands has a screw on cap. The Hip Flask be engraved with a name or logo or any personal message.