Monoprice via Rakuten offers its Monoprice Pure Outdoor Emperor 25-Liter Cooler in Gray for $99.99. Coupon code "SPORTS20" cuts it to $79.99. With free shipping, that's $5 under our April mention and $20 less than buying via another storefront today. Buy Now Tips you must be logged in to your account to apply the code Features keep cold items cold for more than 130 hours or hot items hot for more than 150 hours