Woot offers Igloo Insulated Sports Water Jug, 64 oz, Pro Blue for $6.99 (orig. $15.45). Free shipping for Prime Members. 

Product Description:
The Igloo 1/2-Gallon Cooler is designed to keep up with you on the trail, in the gym or on the field. The Cool Riser Technology™ is Igloo’s promise that you will never have another lukewarm liquid while you sweat, no matter the temperature outside. Rest assured that the durable design of Igloo’s 1/2-Gallon Cooler means that it keeps your bottle safe from any accidental drops. The wide mouth opening makes it easy to chug or pour to share.

• Fully insulated beverage cooler keeps drinks cold the entire game or event
• Flip-cap snaps closed securely and folds out of the way during use
• Wide opening allows for chugging or fast-flow pouring
• Easy-grip lid design for effortless opening and closing