Designed and manufactured for workout intensity, comfort and value, these floor protectors offer super heavy-duty solid rubber construction that absorbs the impact of free weights, home gyms, treadmills and kids rooms. Rubber flooring ensures natural, secure footing for excellent traction and superior impact protection. These pads will not tear, split, stretch, crack, creep, wrinkle or shrink even under the most brutal conditions. Apply them directly over your existing wood, concrete or carpeted floor. Installation is easy-no adhesive, no interlocking tabs-simply drop them in place. Best of all, they are worry free! No more floor damage, no more structural damage, and greatly reduced noise levels. Non-marking black color is non-glaring for a soft, satin appearance that will not fade. Enhance any room with these shock absorbing rubber mats. They’re strong, stable, silent and tough. Tough enough to bounce right back every time! Mat dimensions: 71.7″ x 47.6″ x 0.67″ (6ft x 4ft x 0.67″). Please note that it is recommended that you lay your flooring and allow it to acclimatize to its surroundings for 24 to 48 hours prior to Installation and/or placing of equipment upon the flooring. This is to allow your flooring to expand or take into consideration any shrinkage of the flooring which varies depending on the location’s temperature and humidity.