Being new to the adventures of Trail and Ultra Running, I was bamboozled by all the kit that is on the market. That was until I came across Harrier. Firstly, with the Starter pack, which I have now added to with the 1.5lt Bladder. All of which I recently tested to the extreme in my 1st 50K Ultra in 30 deg+ heat. All I can say is what a lifesaver it was to have a quality kit to see me through. Since my initial purchase, I have come to learn of the Harrier Community and support which is as important as their equipment. So my advice is to get out & run free and take Harrier with you.