In Aldi now 750ml drinks bottles in alluminium, with flip top seal, and extra screw in top (bung) should you wish to use fizzy. Come anodised in black, silver, loverly metallic blue ( hope stem colour) and an even loverlyier metallic cherry red, complete with el-cheapo placcy bottle cage and all screws ....... wait for it .............................................£2.99. Bought 2 I did!