I have had good results with a weight vest.
do yall have a past thread about weight vests
i can see why ankle weights are bad for you but i cant see why weight vests are bad for you.
Welcome. Check out those posts Rupert shared with you (just click search button at the top in the future).
What were your results with a weighted vest and how did you use it?
i decreased some of my times in less than a week’
i have a 20lb weighted vest made by x-vest…i plan on using it this summer when i run my routes and do my agility drills…Javon Walker’s trainer had him using one last off-season, and they said the green bay DB’s couldn’t cover him.
That’s not saying much 
Weighted vests are fun and they are a good change in pace… not sure if it helps speed or if it is mental but when I have ran distance and did plyos with a 12lber the next session without it I felt much faster and lighter! I did not test to see if I actually made improvemnts but that would be an interesting experiment!
Peace
ya, that would be a good question to answer if it was physical or mental
im guessing its physical (which i hope) because the training on thexvest.com calls it contrast training.
weight vests are a poor tool to use running, they lower the COG and hip height. They are a great tool to be used during power speed drills and plyos.