Hydro FlaskBrand · Home goodsStandard Flex Straw Cap$14.95Stocked at 2Great Outdoor StoreSioux Falls, SDRetailer · Outdoor store$14.95Walkabout OutfitterBlacksburg, VA; Harrisonburg, VA; Lexington, VA; Richmond, VA; Roanoke, VA; Williamsburg, VARetailer · Outdoor store$14.95