I keep my solutions in the fridge especially this time of year, when I pack my things up to go to a client I use a black soft cooler bag which holds 6 /7 litres of solutions in so it all keeps cool whilst i'm out, I often think it doesn't look very professional but I can't think of any other way to keep the solitions cool in this weather whilst being mobile, does anyone have any other suggestions or is my plain black cooler bag OK:?: