For sale on eBay is a Joe Rocket 1 piece riding suit. Grey and silver.
I am not affiliated with this sale.
I have one of these suits. They are very nice, fully armored, water proof and has a full ankle to wrist quilted liner. I have worn mine in temps between 17*F to 75*F and never was uncomfortable. I highly recommend this for a 1 piece riding suit.
http://www.ebay.com/itm/231554185274?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT#ht_1675wt_1153 (http://www.ebay.com/itm/231554185274?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT#ht_1675wt_1153)
Fred