While wool blankets are renowned for their warmth and durability, they do have several significant disadvantages that are important to consider before making a purchase.
Here’s a breakdown of the main drawbacks of wool blankets:
1. Cost
Wool is one of the more expensive natural fibers. The process of shearing, cleaning, spinning, and weaving is labor-intensive. High-quality wool, like Merino or cashmere, commands an even higher price, making wool blankets a significant investment compared to synthetic or cotton alternatives.
2. Itchiness and Skin Sensitivity
This is the most common complaint.
- Coarse Fibers: Many traditional wool blankets (especially those made from cheaper wool or certain breeds like sheep) have coarse fibers that can feel prickly and itchy against the skin.
- Allergies: While true wool allergy is rare, many people have a sensitivity to lanolin (the natural oil in wool) or the coarse fibers themselves, leading to skin irritation and discomfort.
Note: This is less of an issue with high-quality, fine wools like Merino wool, which has much softer, smoother fibers.
3. Specialized Care and Maintenance
Wool is not a low-maintenance fabric.
- Shrinking: Wool is prone to felting and shrinking when exposed to heat, agitation, and sudden temperature changes. This often means hand-washing in cold water is necessary.
- Dry Cleaning: Many wool blankets have a “dry clean only” label, which adds to the long-term cost and hassle of ownership.
- Drying: They cannot be machine-dried. They must be air-dried flat to maintain their shape, which can be a slow process.
4. Weight
Traditional wool blankets are famously heavy. While this contributes to their cozy, weighted feeling, it can be a disadvantage for some:
- It can feel restrictive or overwhelming for children, the elderly, or those who move a lot in their sleep.
- It makes them less portable and bulkier to store.
5. Slow Drying Time
Wool’s natural moisture-wicking properties are a double-edged sword. While it can absorb a fair amount of moisture without feeling wet, it takes a very long time to dry completely once saturated. This can be an issue if the blanket gets damp from spills, humidity, or storage in a damp place, as it can lead to mildew.
6. Susceptibility to Moths
Wool is a natural protein fiber, which makes it a prime target for clothes moths and carpet beetle larvae. Blankets must be stored properly (e.g., cleaned before storage, in airtight containers with cedar or mothballs) to prevent irreversible damage.
7. Potential for Pilling
Especially with softer, finer wools, pilling (the formation of small fabric balls on the surface) can occur with friction and use. While these can be removed with a fabric shaver, it is an additional maintenance step.
8. Not Ideal for Warm Climates or Summer
While wool is excellent for regulating temperature, a heavy wool blanket is often too warm for hot climates or summer use. It can cause overheating and discomfort for sleepers who naturally run warm.
9. Bulkiness
Wool blankets are thick and dense, making them difficult to fold compactly and store in small linen closets. They take up a significant amount of space.
10. Environmental and Ethical Concerns (for some)
While wool is a natural and renewable resource, some people have concerns about:
- Animal Welfare: Practices like mulesing (a controversial practice primarily in the Australian Merino industry) raise ethical questions for some consumers.
- Processing: The scouring and dyeing processes can involve chemicals and high water usage, though this is also true for many synthetic fibers.
Summary: Who Might Want to Avoid a Wool Blanket?
- Anyone on a tight budget.
- People with sensitive skin or a known sensitivity to wool.
- Those who want a low-maintenance, machine-wash-and-dry blanket.
- Sleepers who naturally get very hot at night.
- People living in hot, humid climates.
- Anyone looking for a lightweight, easily portable blanket.
Despite these disadvantages, for the right person, the advantages of wool—superior warmth, durability, moisture-wicking, and natural fire resistance—often far outweigh the downsides. The key is to choose a high-quality wool (like Merino) if your budget allows and be prepared for the specific care it requires.
