The La Sportiva TX2 approach shoes are part of a Sportiva shoe line that includes the TX3 and TX4. The TX series combines the attributes of hiking, trail running and climbing shoes to create designs that are as versatile as possible while keeping the weight minimal. The TX2s are the lightest of the series, at 9.8 ounces, while the other two models provide increasing levels of support and durability, weighing 12.5 and 13 ounces, respectively. (A pair of Sportiva Miura climbing shoes weighs 8...." go to full review