And your mattress doubles in weight every eight years....
That is just a way to sell more product by shaming people into "being safe".
Uncrashed styrofoam doesn't stop being effective and turn into a pumpkin after two years. But you can double revenue if you can halve the replacement cycle.
As the plasticizer leaves plastics, it becomes embrittled.
You want the EPS to crush smoothly -- if it cracks and displaces, it will not be in place to absorb energy and cushion the impact further.
We replace our bike helmets every ~6 yr.
Source: Have listened to the crackle of decade-old plastic kayaking helmets under tensile/compressive stress and watched them shatter like glass after impact with a concrete floor. New helmets from the same manufacturer did neither.
> That is just a way to sell more product by shaming people into "being safe".
The cynic part of me agrees, but is it though?
Some plastics seem to get "stressed" over time, especially if under sunlight (not sure if it's the temperature or UV that's the issue) - I wonder if that's part of the concern here?
That is just a way to sell more product by shaming people into "being safe".
Uncrashed styrofoam doesn't stop being effective and turn into a pumpkin after two years. But you can double revenue if you can halve the replacement cycle.