"I purchased the 4000ml tub for my 1kg of impact whey. First of all, the tub (4000ml) is well made and a good size to fit on any shelf or in any cupboard. The 1kg of impact whey filled the tub approximatley 90%, so for anyone wondering how many kg's of protein the tubs can hold, I strongly reccomend 4000ml per kg as a benchmark. Very happy with this product and I'd recommend it to anyone :)"

I bought the 10000ml tub and it's well made. For anyone unsure of sizes I posted a review for this tub which include pictures here: http://community.myprotein.com/supplements-formulas/39699-review-10000ml-tub.html#post555258 If I needed more I wouldn't hesitate to buy these again.

"i ordered the 6litre tub because my bags seal ripped, i put the rest of my hurricane xs in the tub and it really helps to keep it fresh, not too big to fit in a cupboard also very cheap for the quality "

"Ordered two 6-litre tubs, 1 kg Impact Whey Protein, and 2.5 kg Instant Oats. The 1 kg of whey protein fills about a third of its tub and the 2.5 kg of oats fill about two thirds, each perfect for when you need to resupply but have some left at the bottom. Very good tubs, well-made, screw lid is easy to tighten and undo and never comes loose. I suggest getting the 6-litre over the 4-litre because the extra literage is well worth the added 50p in price, unless you like to shake it up at the gym - they're fairly big tubs."

"Ordered two 6-litre tubs, 1 kg Impact Whey Protein, and 2.5 kg Instant Oats. The 1 kg of whey protein fills about a third of its tub and the 2.5 kg of oats fill about two thirds, each perfect for when you need to resupply but have some left at the bottom. Very good tubs, well-made, screw lid is easy to tighten and undo and never comes loose. I suggest getting the 6-litre over the 4-litre because the extra literage is well worth the added 50p in price, unless you like to shake it up at the gym - they're fairly big tubs."