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How the Mozy Blanket Wrap Prevents Convective Heat Loss

After spending too many of his kid’s games with freezing legs, our founder Charles set out to develop an improved stadium blanket. Instead, after developing, modeling and testing over 40 different designs, the result was a technical garment for the lower body that was dramatically warmer than a stadium or picnic blanket. The results were so dramatic that he applied for a patent on the technology.


Convective Heat Loss

Jeans

Heat loss all over the legs due to minimal protection

Cool breeze (blue arrows) carry away warm body heat (red arrows)

Stadium Blanket

Heat loss in the gaps of the blanket, as well as the back of the legs

Cool breeze (blue arrows) carry away warm body heat (red arrows)

Mozy

No convective heat loss

Cool breeze (blue arrows) cannot penetrate the Mozy. The legs remain warm


Molecular Convective Heat Loss

Cool air (blue) outside the Jeans and warm air molecules (red) inside the jeans and close to the jeans exterior

Cool air (blue) outside the Jeans and warm air molecules (red) inside the jeans and close to the jeans exterior

Cool air (blue) outside the Jeans and warm air molecules (red) inside the jeans and close to the jeans exterior

As wind starts, the cold molecules on the exterior replace the warm molecules

As wind starts, the cold molecules on the exterior replace the warm molecules

As wind starts, the cold molecules on the exterior replace the warm molecules

As wind starts, the cold molecules on the exterior replace the warm molecules

The cold molecules then penetrate the jeans and replace the warm molecules touching the skin. The body then feels cold and tries to warm the skin

The cold molecules then penetrate the jeans and replace the warm molecules touching the skin. The body then feels cold and tries to warm the skin

The cold molecules then penetrate the jeans and replace the warm molecules touching the skin. The body then feels cold and tries to warm the skin

The cold molecules then penetrate the jeans and replace the warm molecules touching the skin. The body then feels cold and tries to warm the skin

Click the arrow/dots to continue

Cold air molecules (blue) outside the stadium blanket and inside the blanket and warm air molecules (red) inside the jeans and close to the jeans exterior  

Cold air molecules (blue) outside the stadium blanket and inside the blanket and warm air molecules (red) inside the jeans and close to the jeans exterior  

Cold air molecules (blue) outside the stadium blanket and inside the blanket and warm air molecules (red) inside the jeans and close to the jeans exterior  

As wind starts, cold molecules on the exterior cannot penetrate the shell but circulate in the gaps replacing the warm molecules

As wind starts, cold molecules on the exterior cannot penetrate the shell but circulate in the gaps replacing the warm molecules

As wind starts, cold molecules on the exterior cannot penetrate the shell but circulate in the gaps replacing the warm molecules

As wind starts, cold molecules on the exterior cannot penetrate the shell but circulate in the gaps replacing the warm molecules

The cold molecules then penetrate the jeans and replace the warm molecules touching the skin. The body then feels cold and tries to warm the skin

The cold molecules then penetrate the jeans and replace the warm molecules touching the skin. The body then feels cold and tries to warm the skin

The cold molecules then penetrate the jeans and replace the warm molecules touching the skin. The body then feels cold and tries to warm the skin

The cold molecules then penetrate the jeans and replace the warm molecules touching the skin. The body then feels cold and tries to warm the skin

Click the arrow to continue

Cold air molecules (blue) outside the Mozy and warm molecules (red) inside the jeans and close to the jeans exterior

Cold air molecules (blue) outside the Mozy and warm molecules (red) inside the jeans and close to the jeans exterior

Cold air molecules (blue) outside the Mozy and warm molecules (red) inside the jeans and close to the jeans exterior

As wind starts, the cold air cannot penetrate the Mozy's exterior shell. The Mozy leaves no space for the cold molecules to circulate and replace warm molecules

As wind starts, the cold air cannot penetrate the Mozy's exterior shell. The Mozy leaves no space for the cold molecules to circulate and replace warm molecules

As wind starts, the cold air cannot penetrate the Mozy's exterior shell. The Mozy leaves no space for the cold molecules to circulate and replace warm molecules

As wind starts, the cold air cannot penetrate the Mozy's exterior shell. The Mozy leaves no space for the cold molecules to circulate and replace warm molecules

As wind continues, there is no convective heat loss and the body stays warm!

As wind continues, there is no convective heat loss and the body stays warm!

As wind continues, there is no convective heat loss and the body stays warm!

As wind continues, there is no convective heat loss and the body stays warm!

Click the arrow to continue


To test the various iterations of improved blanket wraps, controlled engineering tests were conducted to measure the body heat loss as a function of temperature and time. The test dummy was warmed to 95° (typical skin tempurature) and wired with thermocouples to measure three different products against the unprotected body (control). The tests were performed at 37° with a fan blowing at 10mph. Tested were jeans, a stadium blanket and the Mozy.


Engineering Heat Loss Test

Heat Loss Wearing Jeans

Heat Loss Wearing Jeans

Heat Loss Wearing Jeans

Heat Loss Wearing Jeans

Heat Loss Wearing Jeans

Heat Loss Wearing Jeans

Heat Loss Wearing Jeans

Heat Loss Wearing Jeans

Heat Loss Wearing Stadium Blanket

Heat Loss Wearing Stadium Blanket

Heat Loss Wearing Stadium Blanket

Heat Loss Wearing Stadium Blanket

Heat Loss Wearing Stadium Blanket

Heat Loss Wearing Stadium Blanket

Heat Loss Wearing Stadium Blanket

Heat Loss Wearing Stadium Blanket

Heat Loss Wearing Mozy

Heat Loss Wearing Mozy

Heat Loss Wearing Mozy

Heat Loss Wearing Mozy

Heat Loss Wearing Mozy

Heat Loss Wearing Mozy

Heat Loss Wearing Mozy

Heat Loss Wearing Mozy


Thermal Camera Analysis

Wearing Jeans vs The Mozy

Jeans/ Stadium Blanket/ Mozy

The Mozy on Over Jeans