How well do flannel blankets resist pilling, shrinking, or fading after repeated washings over a long period of time?

Flannel blankets generally vary in their resistance to pilling, shrinking, and fading, which largely depends on factors like the quality of the fabric, the construction, and how they are maintained. 
1. Pilling Resistance
Material Quality: Higher-quality flannel blankets, especially those made from 100% cotton or a high-grade cotton blend, are less likely to pill compared to lower-quality or synthetic flannels. Cotton fibers tend to resist pilling better than synthetic fibers, but all flannel can be susceptible over time.
Fabric Finishing: The best flannel blankets are often treated with anti-pilling finishes or are tightly woven, reducing the likelihood of pilling. Double-brushed flannels, which are brushed on both sides, may be more prone to pilling, but they offer enhanced softness.
Care Practices: Using a gentle wash cycle, avoiding high heat, and minimizing friction during drying can reduce pilling. Washing with similar fabrics and using a mild detergent also help in maintaining the blanket’s quality.
2. Shrink Resistance
Pre-Shrunk Fabric: Many flannel blankets are pre-shrunk during the manufacturing process to minimize the risk of shrinkage after purchase. This is especially common with 100% cotton flannel.
Washing Instructions: Flannel can shrink when exposed to hot water or high heat in the dryer. Following the care instructions—typically, washing in cold or warm water and tumble drying on low—can help prevent further shrinkage.
Blended Fabrics: Blends that include a small percentage of synthetic fibers, like polyester, are less prone to shrinkage but may slightly alter the feel and warmth of the blanket.
3. Fading Resistance
Colorfast Dyes: High-quality flannel blankets are often treated with colorfast dyes to prevent fading. Cotton flannel tends to hold color better when it’s dyed with high-quality, colorfast dyes.
Washing Practices: Washing in cold water, using a gentle cycle, and avoiding bleach or harsh detergents can help preserve the color of the flannel blanket over time. Air-drying or using a low-heat dryer setting can also help maintain vibrant colors.
Exposure to Sunlight: Prolonged exposure to direct sunlight can cause fading, so storing the blanket out of sunlight or drying it indoors can help maintain its color.
4. Long-Term Durability
High-quality flannel blankets, especially those made from durable cotton and treated for shrinkage and pilling, can last many years with minimal fading if properly cared for. Cheaper flannels, or those made with lower-quality dyes and untreated fibers, are more likely to show wear over time, including increased pilling, noticeable shrinkage, and fading.
For those looking for blankets that will hold up well to repeated washings, choosing a flannel blanket with reinforced seams and high-quality fabric will generally yield the best results.
A well-made flannel blanket can resist pilling, shrinking, and fading for a long time, especially if it is crafted from high-quality materials and treated with appropriate fabric finishes. Proper care, including gentle washing, cool drying, and minimizing exposure to high heat and sunlight, plays a significant role in extending the life of the blanket.