Sacro-Ease Keri Back Cushion<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> The internal rubber support takes the "bumps" out of your ride! </span></li><li><span class="a-list-item"> 1" of comfort memory foam in back </span></li><li><span class="a-list-item"> Steel frame and rubber supports </span></li><li><span class="a-list-item"> Available with horizontal or vertical straps </span></li><li><span class="a-list-item"> Dimensions: 15" L x 4" W x 18" H </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41D90vH9XxL.jpg" noproxy>