White foam hat filler in packaging labeled 'Lack of Color Hat Filler'
Roll of foam hat filler for snug fit, 60 cm long.
Hat filler product in packaging with barcode and care instructions on the back
Two strips of foam hat filler for snug fit adjustment.
Interior view of a straw hat showing foam hat filler for snug fit.
Inside view of a straw hat showing foam hat filler for snug fit.

Hat Filler

Regular Price: $5.00 USD Sales Price: $5.00 USD
or 4 payments of $1.25 USD 
4.9
Rated 4.9 out of 5 stars
311 Reviews

If your hat isn't a snug fit, the hat filler is for you...

  • Made of foam cushioning, the adhesive filler sticks to the inside of your hat (the wool OR straw) for a better & smaller fit
  • Reduces hat size by approximately 1-2.5 cm
  • Can be used the whole way around your hat or just partially, if you are only wanting to reduce your hat size by a small amount
  • Roll is 60 cm / 23.6 inches in length 

Please note, hat filler is applied to the inside of the hat crown, under the sweatband lining

  • Express shipping within 1-3 Business Days.
  • Standard Shipping within 2-5 Business Days.
  • International: Shipping costs and delivery times vary by country. Find out more here.
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What our customers think...

4.9
Rated 4.9 out of 5 stars
311 Reviews
311 reviews
  • Candice C.
    Verified Buyer
    I recommend this product
    Favorite features Comfortable, High Quality, Thoughtful Design
    Rated 5 out of 5 stars
    2 days ago
    It works!

    Subtle and fits inside my straw hat. I prefer a loose fit so I buy my hat larger. That way I can wear it at different angles... this tape i place inside my hat so the hat can sit perfectly as I want it to

  • Vincentius P.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Make it perfect fit

    I was in between size M and S . And this filler help me to get perfect fit

  • Claire B.
    Verified Buyer
    I recommend this product
    Favorite features Comfortable, Great Fit
    Rated 5 out of 5 stars
    4 months ago
    Hat Filler

    This is great for making my slightly lose hat fit a little more snuggly - would recommend.