Have the Sports pack on my shoulder/neck as we speak. I use it after microwaving it. It stays hot/warm for a good 30 - 40 minutes. More if I wrap a scarf or towel over it.
Link on Amazon: http://www.amazon.com/TheraPearl-Sports-pack-Rectangle-Bag/dp/B002OSWW34/ref=sr_1_1?ie=UTF8&qid=1361373847&sr=8-1&keywords=therapearl
For the eye mask:
http://www.amazon.com/TheraPearl-Eye-ssential-Mask/dp/B002OSWW3O/ref=sr_1_2?ie=UTF8&qid=1361373847&sr=8-2&keywords=therapearl
These are great, the eye mask really helps with headaches/migraines that my girlfriend and I get frequently. $7 is a steal
Bought just the pack in Walmart for $9.00 bucks and love it. This is a great deal. Can’t wait to try the Eye Mask.
I have the eye masks, and they work great! Havent tried heating them yet though.
I wish the reg packs were sold separately, I could use a few of those…
I bought the arm ones they had on here a few months ago. They work great. In for a pair.
Do not buy these through the mail if you live at high altitude. I live in Salt Lake and when they arrived they had ballooned up because of the difference in air pressure.
My mask broke open the first time i used it 
super disappointed.