The unassuming XR-Slide is very useful tool that allows you to do hundreds of bodyweight exercises that would not have been possible without it including variations of well-known moves like the push-up, lunge, mountain-climber, and more. You can even do swimming moves like the butterfly stroke and slide froggie crunches as demonstrated in one of the XR-Slide videos on Youtube. Not only are the sliders versatile, they're compact and portable so you can easily take them with you on your travels and never miss a workout due to lack of equipment.
£20 when it was available.
