Nursing Pillow Cover Shrunk or Won't Fit: How to Fix It

Quick answer

If your nursing pillow cover shrunk or won't fit after washing, first try stretching it while slightly damp. If it still feels too small, switch to a cold, gentle wash and air dry. When the cover no longer fits the pillow comfortably, replace it with a correctly sized slipcover.

Why a nursing pillow cover shrinks or stops fitting

Most slipcovers shrink because of heat. Hot water and a hot dryer can tighten the fabric, especially cotton blends. A cover that fit perfectly before can suddenly feel too small. Sometimes the problem isn't shrinkage at all: the pillow itself may have shifted or compressed, or the cover may be the wrong size for your pillow model. If you have a Twin & Plus pillow, a standard slipcover will not fit, no matter how much you stretch it. Always check that the cover matches your pillow type before blaming the wash.

How to stretch a shrunken slipcover back into shape

Start by spritzing the cover with cool water until it's damp but not soaking. Then gently stretch it over the pillow, working from the corners inward. Pull evenly and avoid yanking seams. Let it air dry on the pillow. If it still feels tight, try a fabric relaxer: soak the cover in cool water with a capful of hair conditioner for 10 minutes, rinse, and stretch again. This can relax fibers without damaging them. Never use hot water or a hot iron directly on the fabric, as that can set the shrinkage.

Washing temperature and drying rules to prevent future shrinking

Wash slipcovers in cold water on a gentle cycle. Hot water is the main cause of shrinkage. Use a mild detergent and skip fabric softener, which can leave residue. Tumble dry on low or, better yet, air dry. If you must use a dryer, remove the cover while it's still slightly damp and stretch it over the pillow to finish drying. This helps maintain the original shape. For everyday messes, spot clean instead of washing the whole cover. That reduces wear and tear and keeps the fit consistent.

When to stop stretching and replace the slipcover

If you've tried stretching and cold washing but the cover still won't fit comfortably, it's time to replace it. A cover that's too tight can be frustrating during night feedings and may put stress on seams. Also, if the fabric feels stiff or the elastic is stretched out, replacement is the practical choice. Extra slipcovers let you swap immediately when one is in the wash, so you're never stuck. For example, the Basic Nursing Pillow Slipcover is an easy, easy-to-clean solution that every nursing mom can use. The Deluxe Nursing Pillow Slipcover offers a similar benefit with a different fabric feel. And if you have a Twin & Plus pillow, the Twin & Plus Nursing Pillow Slipcover - Coral is sized specifically for that larger shape, so you won't have to fight the fit.

Diagnose your slipcover fit problem

• Symptom: Cover feels tight but still goes on: Likely cause: mild shrinkage from hot water or dryer heat. Corrective action: dampen with cool water, stretch over the pillow, and air dry. Switch to cold washing and low or no heat drying. If it fits comfortably after stretching, keep using it with cooler washing.
• Symptom: Cover won't stretch over the pillow at all: Likely cause: significant shrinkage or wrong size for your pillow model. Corrective action: check the label for pillow compatibility. If it's the right model, try the conditioner soak and stretch method. If it's the wrong model, stop stretching. If it's the wrong size, no amount of stretching will make it fit. Replace with the correct slipcover.
• Symptom: Cover fits but feels stiff or seams strain: Likely cause: fabric damage from repeated heat exposure or age. Corrective action: replace the cover. A new slipcover will fit properly and be more comfortable for feeding. Replace when comfort or durability is compromised.

Slipcover options that solve fit problems

• Basic Nursing Pillow Slipcover: Basic Nursing Pillow Slipcover is an easy to use, easy to clean solution that every nursing mom can use. A spare cover means you can replace a shrunken one immediately and always have a fresh cover ready.
• Twin & Plus Nursing Pillow Slipcover - Coral: Twin & Plus Nursing Pillow Slipcover - Coral is designed for Twin & Plus pillows. Standard covers won't fit Twin & Plus pillows, so choosing the right size prevents the 'too small' problem.
• Deluxe Nursing Pillow Slipcover: Deluxe Nursing Pillow Slipcover is another easy to clean option for nursing moms. If your current cover has shrunk beyond stretching, a Deluxe slipcover offers a fresh, properly fitting replacement.