Ukupakishwa Kwewayini I-Flow luyilo lokupakisha lwewayini emhlophe olukhuthaza ukusela ngokulinganiselweyo. Ibhotile yenziwe ngesimo se-hourglass (isixhobo sokulinganisa ixesha ngentlabathi) kwaye yenziwe ngeglasi ecacileyo enemialeko emibini. Umaleko wangaphandle olula uvumela ukuba isikhongozeli sangaphakathi esimile okwe-hourglass sibonakale. Isikali seemililitha siphawulwe kumphezulu webhotile. Isimo se-hourglass senza ukuba isiselo sihambe kancinci, ngoko ukugalela kuthatha ixesha elide kwaye umlinganiselo ogalelwayo kulula ukuwulawula. Ibhokisi yangaphandle yenziwe nge-PVC ecacileyo. I-Flow inxulumanisa ukusela nokuhamba kwexesha kwaye ikhumbuza abantu ukuba baxabise impilo.