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SLEEP RESEARCH... The latest scientific results!Woolmark

Consistent with earlier scientific findings, a study by the University of Sydney, Australia and funded by the Australian Wool Innovation, has found that a better night's sleep is achieved when sleeping in or under wool. (Australian Wool Innovation Ltd, is the owner of The Woolmark Company Pty Ltd)

    • In the pilot stage of this 3-year study, eight volunteers participated in the study and were tested in varying temperatures using both wool and non-wool sleepwear and bedding products
    • Results were derived using polysomnography which is currently the standard technique where subjects have brain wave patterns measured and analysed.
    • According to this study, wool sleeping apparel and bedding increases total sleep time and improves sleep efficiency.


Figure 1. Comparison of Total Sleep Time between wool and non-wool apparel under hot conditions.

Figure 2. Comparison of Sleep Efficiency between wool and non-wool sleeping apparel and bedding under warm (22°C) and cold (17 °C) conditions. Sleep efficiency is the portion of time spent asleep compared to total time in bed; the higher the proportion the higher the sleep efficiency.

DOES WOOL IMPROVE SLEEP QUALIT? - The scientiffic evidence

Previous studies suggest that sleep quality improves when sleeping on or under wool. This appears to be related to wool’s unique temperature and moisture management properties, and texture. You can read about these studies below.

  • The use of a fleecy wool underlay enabled sleepers to be more ‘settled’ and improved their own assessment of sleep qualit1
  • Sleepers preferred wool blankets (when compared with cotton/acrylic blends) for their temperature regulation properties 2
  • Wool sheepskin underlay was shown to be better at diffusing pressure points when compared with cotton sheets 3
  • The rate of weight gain in underweight newborns was 61% higher when sleeping on a wool underlay compared to a cotton sheet 4
  • Jaundiced newborns sleeping on wool were moresettled when sleeping compared to those on cotton– around 30% of babies on wool cried compared with 67% on cotton 5

1. Dickson,P.R. (1984), Medical Journal of Australia, January 21, p87-89
2. Umbach, K.H. (1986), Journal of the Textile Institute, 77:3, 212-222
3. Ewing, M.R., Garrow, C., and McHugh, N. (1961), The Lancet, 2, 1447 AND Laubscher, N.F. (1966), South African Medical Journal, 9th July 1966, 599-601
4. Scott, S., and Richards, M., The Lancet, May 12 1979, p1028. AND Scott, S., Lucas, P., Cole, T., and Richards, M., The Lancet, October 29, 1983, p1014-1016
5. Powley, M., Nye, P., and Buckffield, P. The Lancet, May 3, 1980, p979-980



Scientific research proves... "MERINO SLEEP BAGS ARE BEST FOR BABY"

Scientific research findings released by AgResearch, New Zealand’s largest national Crown Research Institute, indicate that baby sleep bags made from natural merino wool are better at maintaining a baby’s comfort and wellbeing compared with synthetic polyester-filled sleep bags.

Read the full report here (PDF Download)






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