There is no such thing as sustainable or responsible wool.
'But sheep need to be sheered no matter what' - WRONG
In nature, sheep grow just enough wool to protect themselves from temperature extremes, it's us humans who have genetically manipulated sheep to have wrinkly skin for more surface to grow wool and not to shed during hot summer months. In summer, this unnatural overload of wool causes many sheep to suffer and die from heat exhaustion.
Sheep shearers are paid by volume rather than by the hour which creates a high stress level for animals and workers resulting in deep cuts, broken limbs and tortured animals.
15 million lambs die in Australia a year within 48 hours of birth which is a commonly accepted loss. Those who survive are forced to endure a torturous procedure called 'mulesing' in which huge chunks of skin and flesh are cut from their backsides without painkillers to prevent maggot infestations. Within weeks of birth, lambs’ ears are hole-punched and the males are castrated without anesthetics.