I never realised the value of a good garden sprayer until I discovered the Rocwood Pressurised Knapsack Backpack Garden Sprayer.
It is a really good sprayer that straps to your back. Can hold 16 litres of spray - great if you have a large garden with a lot of weeds. Very good lever pump that you can operate whilst using. Great spray head that is fully adjustable. The pack is well balanced and not too heavy - well worth the price.