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Sleep Tight Weighted Blanket by Sommerfly


The Sleep Tight weighted blanket is a calming blanket that is designed to help children and adults relax, help with insomnia, and get a good night’s sleep.  Most weighted blanket brands focus on their primary use as an aid to decrease anxiety and for use in sensory therapies, however, the Sleep Tight does not mention these specifically.   The company behind the brand, Sommerfly, markets the Sleep Tight as a blanket that helps you sleep, focus, and calm down.

Sleep Tight Blanket Unique Features

The Sleep Tight has several unique features that you will not find with other brands on the market.

Curved Head Cutout


Sleep Tight Weighted Blanket by Sommerfly

The curved head cutout located at the top of the blanket is a genius design.  I’m sure you fight with your covers every night like I do, trying to wrap yourself under the sheets and comforter and end up having all this extra fabric bundled around your neck and in your face.  The head scooped head cut out prevents this from happening and allows you to benefit from the blanket covering your shoulders and nestling up against your neck, not on top of it.  This design is also ideal because you are not supposed to cover your face with a weighted blanket, so this design is like having a built-in safety feature.  This is the only weighted blanket on the market that I am aware of that has this curved cutout design.

Available in Five Sizes

Extra Small

  • 32″ x 36″ blanket dimensions
  • 5lb blanket weight
  • Suitable for a 3-year-old or
  • body weight ranging between 22 and 35lbs


  • 36″ x 42″ dimensions
  • 8lb blanket weight
  • Suitable for 4-5 year old or
  • body weight between 36-45lbs


  • 42″ x 54″ blanket dimensions
  • 12lb weight
  • Suitable for 6-10 year old or
  • body weight ranging from 46-70lbs


  • 54″ x 72″ blanket dimensions
  • 16lb blanket weight
  • Suitable for 11-15 year old or
  • body weight ranging between 71-140lbs

Extra Large

  • 57″ x 80″
  • 25lb blanket weight
  • Suitable for 16-year-old – adult or
  • body weight that is 141lbs or more

To give you a visual and reference how large the blankets are, a twin size mattress measures 39″ x 75″.   The XS size would roughly cover half the length of a twin size bed and most of the width.  An XL would just barely cover the top of a queen size mattress.

Numerous Patterns to Choose From

The Sleep Tight is available in several patterns to choose from – 17  to be exact.  They include:

  • Trucks
  • Blueprint Queen Anne’s Lace
  • Colorful Monsters
  • Coral Flowers
  • Green Grass
  • Dinosaurs
  • Monkey Junction
  • Silver & Gold Strokes
  • Spearmint Green
  • Spring Butterfly
  • Spring Green
  • Teal Leaves
  • Space Explorers
  • Buckskin Tan Corduroy
  • Navy Blue Corduroy
  • Blue Waves
  • Blue Pimatex Cotton

The Sleep Tight blanket is stocked in blue and tan corduroy patterns as well as the Blue Waves pattern.  All other color options are considered to be special order items and can take anywhere from 1-3 weeks to ship.

Non-Toxic Materials

The interior of the Sleep Tight blanket is made of non-toxic materials so it is safe for children and animals.  The material used to give the blanket its weight is called polyethylene terephthalate or PET.  It is a type of polyester resin that is found in a variety of food storage containers and water bottles.  In this case, the PET is formed into small bead-like granules or pellets that can range in size and shape.  They are usually about the size of a green pea or slightly smaller.  They are very lightweight and soft, but when stored together can become heavy.  The pellets are placed in a cotton bag, like a bean bag, and then sewn together like a

Non – Toxic PET Pellets

pocket or quilt which contains the PET pellet bags inside.  This evenly distributes the weight across the entire blanket, keeps it soft to the touch, and contains the pellets from ever coming out.

Sommerfly promotes the Sleep Tight as being BPA and Lead-Free.  The company supports high-quality cotton fabrics that are made in the United States.

Washable Duvet Cover

Sleep Tight also designs a machine washable duvet cover for their blankets.  This can extend the life of the blanket or provide an alternate color option.

All Sleep Tight blankets are made with duvet loops on all ends so that the duvet strings can be tied to the blanket; this keeps the blanket attached to the duvet and avoids bunching.

How Much is a Sleep Tight Weighted Blanket?

Sleep Tight blankets range in price and increase as you go up a size.  They may seem expensive at first, however, they are made of quality materials that will last for years.  If you or a loved one is having difficulty sleeping, relaxing, or focusing, the Sleep Tight blanket is a small price to pay in order to have relief.

  • Extra Small $136
  • Small $166
  • Medium $196
  • Large $240
  • Extra Large $296

Sleep Tight  Weights

Blanket Weights

Unlike other competitors, Sommerfly stands behind their higher than industry average blanket weights.  They design their blanket weights based on 15%-25% of a person’s body weight.  Other competitors use 10% as a general rule of thumb and is most likely a safety precaution.  However, since Sommerfly is a company started by an occupational therapist, they believe that the heavier the blanket, the more beneficial it will be for the end user.  They base their guidelines off of the American Academy of Pediatrics standards as well as clinical studies that have been performed.

The American Occupational Therapy Association recommends a child should not carry more than 10% of their body weight in a backpack but do not publicize what kind of load-bearing blanket weight is safe, especially for orthopedic purposes.  I do think it’s safe to say that Sommerfly has the experience in the industry and the know-how on the effectiveness and safety their blanket weights have to offer.

Sommerfly – the Company behind the Sleep Tight Weighted Blanket

Sommerfly is a Rhode Island-based company located in the city of Cranston, a suburb just southwest of Providence.  The company was started by two sisters, Kristi Langlset and Heidi Langslet-Hall.  Sommerfly was officially registered as a business in 2005.  The sisters decided to start the business after Kristi noticed a need for sensory products while she was working as an occupational

weighted blanket

therapist.  Kristin began to make custom homemade products for her patients that she could not find on the market.  After some trial and error, her products started getting great feedback and the sisters decided to move forward with their own business.

Kristi Langslet has two degrees: a B.S. in Occupational Therapy as well as a B.A. in Sculpture from Colorado State and the Rhode Island School of Design.  Not much information was found on her sister Heidi.

Other Sommerfly Products

Sommerfly offers several other weighted blanket options including their Relaxer and Wipe Clean Weighted Blankets.  They also design and produce weighted neck wraps, vests, and lap pads.

Relaxer Weighted Blanket

The Relaxer weighted blanket by Sommerfly is more of an apron or body gown than a blanket which lays flat on top of you while sitting, reclining, or laying down.  The top of the Relaxer is shaped like a baby bib so the blanket can attach to your head and at the back of the neck.  It’s less bulky than the Sleep Tight blanket and does not fully wrap around the body.  Sommerfly mentions that it is great for traveling in the car or on a plane, doctor’s sitting rooms, or for use during dental work.  It still gives the weighted heavy feeling that relaxes and calms you but without all the bulkiness.

weighted blanket

The Relaxer Weighted Blanket is available in 5 sizes as well as the same color patterns as the Sleep Tight.  The dimensions are significantly smaller, yet the weights are still the same for each size.  The sizing chart is a bit different based on the person’s body weight though.  This is most likely due to the fact that there is less coverage but more weight.  The weights suggested per size are as follows:

  • Extra Small – 35lbs – 79lbs
  • Small – 80lbs – 110 lbs
  • Medium – 111 lbs – 140lbs
  • Large – 141lbs – 180lbs
  • Extra Large – 180lbs – 220lbs or more

The Relaxer also has 2 duvet options – one that is fabric and one that is waterproof.

Wipe-Clean Weighted Blanket

The Wipe-Clean weighted blanket by Sommerfly is a hospital-grade blanket designed for public areas like schools or hospitals that cannot launder the blankets on a regular basis.  The Wipe-Clean does not need to be laundered and can just be wiped down and disinfected.


The Wipe-Clean weighted blanket has the following features:

  • Waterproof
  • Breathable and Anti-Microbial material
  • Tear-Proof
  • Flame resistant
  • Non-Toxic
  • Lead-Free
  • Made in America
  • Blanket weights range from 15 – 25% of user’s body weight

Lap Pads

Sommerfly also designs adjustable lap pads that enable you to focus on the task at hand while seated.  The lap pads are great for young children who get easily sidetracked while reading or doing homework.  The lap pads are made from the same PET pellets as the Sleep Tight blanket but the pad is just large enough to cover your lap.  The lap pad has an adjustable buckle that can be wrapped weighted blanketaround the waist so it is secure and stays put instead of falling on the ground.  The weight of the lap pad is calming like the Sleep Tight yet is the perfect size to take to school, work, or to use while traveling.  Lap Pad duvet covers are also available for purchase and prolong the life of the product.  The duvet covers are available in both corduroy fabric and wipeable waterproof fabric.

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