I have never ordered a pad for outdoor rugs, but I slip easily on large-tile floors  knew the rug would slide.  This one is specifically designed for outside.  I live on the NC coast where mildew thrives.  We get heavy rains  if the temp swings from hot to cold (happens a lot here) the tile sweats.  This pad is designed w a large open weave that encourages air to go through and allows water to drain off more easily.  It’s Exactly what you need!!  It keeps the rug from moving - again, exactly what I need.  This is the 4th or 5th rug pad I’ve ordered from Wayfair  I am always pleased with them.  I always order pads a bit bigger if they don’t have the size I need - it’s so easy to cut to the perfect size (about an inch or so shorter than all sides) with just a plain pair of regular scissors.  Never risk letting someone slide on a rug - pads protect your floors as well and they are relatively cheap!  A trip to the ER is .
 These pads are worth every Penny!