The scientific evidence below will answer your questions:

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.

  1. The use of a fleecy wool underlay enabled sleepers to be more “settled” and improved their own assessment of sleep quality. [1]
  2. Sleepers preferred wool blankets [when compared with cotton/acrylic blends] for their temperature regulation properties. [2]
  3. Wool sheepskin underlay was shown to be better at diffusing pressure points when compared with cotton sheets. [3]
  4. The use of wool-on sheepskin as underlay more than halved the incidence of lower back pressure ulcers. [4]
  5. The rate of weight gain in underweight newborns was 61% higher when sleeping on a wool underlay compared to a cotton sheet. [5]
  6. Jaundiced newborns sleeping on wool were more settled when sleeping compared to those on cotton – around 30% of babies on wool cried compared with 67% on cotton. [6]
  7. The incidence of allergies to wool are described in the scientific literature as “uncommon” or “rare”. [7]


The latest scientific results prove again that babies sleep better in wool.

Consistent with earlier scientific findings, a study undertaken 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.

  1. 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.
  2. Results were derived using polysomnography which is currently the standard technique where subjects have brain wave patterns measured and analysed.
  3. According to this study, wool sleeping apparel and bedding increases total sleep time and improves sleep efficiency.

In hot [29 degrees Celsius] conditions, wearing wool sleepwear saw participants sleep significantly longer; reflecting faster sleep onset and waking up less frequently. The total sleep time in minutes at 29 degrees C reduced 17 minutes in cotton and 23 minutes in synthetics.

In both cold [17 degrees Celsius]and neutral [22 degrees Celsius] conditions, the combination of wool sleepwear and bedding saw participants have a more efficient sleep compared to when tested using non-wool sleepwear and bedding.  Rated on the total time spent in bed compared with the portion of time spent asleep, wool bedding and wool garments were proven to create more efficient sleep patterns.

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[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.

[3]           Laubscher, N.F. [1966] South African Medical Journal, 9th July 1966, 599-601

[4]           Mistiaen, P., Jolly, D.J., McGowan, S., Hickey, M.B., Spreeuwenberg, P., and Francke, A.L. [2010], Medical Journal of Australia, 193, 638-641,

[5]           Scott, S., and Richards, M.m The Lancet, May 12 1979, 1028

[5]           Scott, S., Lucas, P., Cole, T., and Richards, M., The Lancet, October 29, 1983, 1014-1016

[6]           Powley, M., Nye, P., and Buckfield, P., The Lancet, May 3, 1980,979-980

[7]           Fischer, A.A. [1973], “Contact Dermatitis”, 12nd Edition, Lea and Febiger, Philadelphia, 135.

[7]           Hatch, K.L., and Maibach, H.I. [1985],”Textile Fibre Dermatitis”, Contact Dermatitis, 12, 1-11.

[7]           Moscato, G., Catenacci, G., Dellabianca, A., Lecchi, A., Omondeo, P., Manfredi, S., Tonin, C. [2000]. “A respiratory and allergy survey in textile workers employed in early stages of wool processing”, G. Ital, Med. Lav. Ergon. 2293, 236-40


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