The vest I use while running! Have initially taken fast daily because of my excess weight by walking (10 to 20 km), which then became increasingly difficult. With the 10-kg-vest training is much more efficient - I run only slightly slower on the same routes and have - the scale proves it - a much better training effect.
Price / performance ratio is top
The Velcro fasteners could be longer at first - since today the vest is too perfect!
If the manufacturer reads this: I had in about 1-2 months interest in 15 or 20 kg vest - which is something like this available?