When you buy through links on this page, HuffPost may earn a commission that helps support our journalism. Every product is handpicked by the HuffPost Shopping team, and prices and availability are subject to change. "Knowing I have the option to sit *immediately* if I need to makes me more willing to go out." As the weather warms, you probably can’t wait to spend time outside. Yet, when it’s tricky to navigate long periods of walking or standing, you may wonder how to make the outdoors more