If you're budget-restricted, your best bet is these Monrow Track Pants. It's a wonderful item, while not very costly. Another strong contender for your wardrobe is these Freecity Running Pants. While the price of this item is rather reasonable, it will definitely attract a lot of attention. You may also want to look at these Sundry Track Pants. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking at it like an investment piece, then you won't be disappointed if you check out these PIERRE BALMAIN Running Pants. It's a costly but smart option. While you're at it, also have a look at these Marni Jogging Pants. Yes, this item is expensive, but it does not mean it's not worth it. And one more item you might be interested in is these Dsquared2 Track Pants. 'Cause you deserve nothing but all the finer things!