The Eli & Elm Side Sleeper Pillow is a U-shaped pillow with a shoulder cutout and fill you can take out or top up, and its listed maximum is 6 inches. Whether that suits you depends on one number, the gap between your neck and the outer edge of your shoulder, and on whether you can live with the return rules. This page works through both. Everything here is based on the manufacturer's specifications, taken from Eli & Elm's product page, titled Side Sleeper Pillow, its FAQ page and its return policy page, all read on September 17, 2026. I have not slept on or handled this pillow.

What Eli & Elm lists

The shape is a U. Eli & Elm's FAQ says the U-shape is designed to cradle the neck and that the cutout gives the shoulder a place to rest. Beyond that description, the page gives no figure for how deep or wide the cutout is.

You choose one of two fills at the same price:

  • Latex noodle is 75% Dunlop latex noodle and 25% polyester fiber. Eli & Elm calls it the firmer fill and says it firms up as the loft rises, with a soft feel at low to medium lofts.
  • Shredded memory foam is 75% shredded memory foam and 25% polyester fiber. Eli & Elm calls it the softer fill.

The cover is 37% cotton, 2% spandex and 61% polyester, over a 100% polyester liner with a zipper. On the check date, Eli & Elm's site listed no separate cotton version of this pillow.

The sizes are Queen, 18 by 28 by 6 inches, and King, 18 by 32 by 6 inches. The Queen listed at $135.99 and was on sale for $114.99 on the check date; the King listed at $169.99, on sale for $143.99. A latex version bundled with a cooling pillowcase listed at $173.98 for Queen and $207.98 for King.

The page shows the OEKO-TEX STANDARD 100 label and says the pillow is made with independently certified materials, but it does not say which part carries the label or name the other certifications.

The loft arithmetic with a pillow you can change

Measure first. Tempur-Pedic's sizing guide for its own pillow asks for the distance from the base of your neck to the outside edge of your shoulder, and I use that method for every pillow on this site. That distance is the space the pillow has to fill with your head on it.

The 6-inch figure is a maximum, and it is the height before your head is on it. Eli & Elm does not say how far either fill compresses. With an adjustable pillow that matters less than with a fixed one, because you can correct it, but it still means the listed 6 inches is the ceiling, not the height you will lie at.

Three made-up gaps, to show how the numbers work. Use yours instead.

  • With a 5-inch gap, the full pillow is an inch over before compression. You take fill out. The page gives no figure for how much height a given amount of fill removes, so this is done a handful at a time, with a night on it in between.
  • With a 6-inch gap, the full pillow is level with the gap before compression, and will sit lower once your head is on it. This is the case where the extra fill starts to matter.
  • With a 6.5-inch gap, the full pillow is half an inch short before compression. Eli & Elm sells extra fill separately, shipped as about 12 ounces in a box, and says it raises the pillow by approximately 15%. On a 6-inch pillow that is about 0.9 inches, so roughly 6.9 inches, based on the manufacturer's specifications. That covers a 6.5-inch gap with a little to spare before compression. The extra fill has its own product page, which was not part of this check, so add its price to the cost yourself.

Past about 6.9 inches, the arithmetic stops working for this pillow even with one box of extra fill. Purple lists a Tall height of 7.5 inches, and Saatva a High Loft of roughly 6 to 7. The Tempur-Pedic TEMPUR-Neck tops out at 4.75 inches, which puts it at the other end.

What it costs per year

Eli & Elm gives no replacement advice, so the divisor here is its 5-year warranty, which covers defects in material or workmanship. Warranty years are not a lifespan. They are only the years in which the maker has promised to deal with a defect.

  • Queen at the $135.99 list price: $27.20 per warranty year.
  • Queen at the $114.99 sale price on the check date: $23.00 per warranty year.
  • King at the $169.99 list price: $34.00 per warranty year.
  • Queen latex with the cooling pillowcase, at the $173.98 list price: $34.80 per warranty year.

Eli & Elm also says the latex version maintains its shape for 10+ years and the memory foam version for 5+ years. If the latex claim held, the Queen list price would spread to $13.60 a year. That is Eli & Elm's claim, and nothing on this page can check it, so I keep the warranty figure as the working number.

Next to the others in the side sleeper pillow guide, with the basis named: Saatva's latex pillow is $55.00 a year over the 3 years Saatva advises, the TEMPUR-Neck is $20.80 to $26.80 per warranty year, and the Purple Harmony is $229 in its single warranty year.

The 45-night trial and the two-week wait

Eli & Elm advertises a 45-night trial, and its product FAQ says you may return the pillow within 45 days of delivery for a full refund. Three conditions sit around that.

  • A return can start only once you have slept on the pillow for at least two weeks, according to Eli & Elm's FAQ. Counted from delivery, that leaves roughly day 14 to day 45, about 31 days, in which a return can begin.
  • Shipping is not refunded. Returns are free, but the return policy says eligible returns are refunded less shipping costs, and the product FAQ says shipping fees are non-refundable. The pages I checked did not state what that shipping cost is.
  • The prepaid return label is valid only for boxes under 30 inches on the longest side. The King is listed at 32 inches wide. The pages do not give the size of the box it ships in, so ask Eli & Elm before you count on the label.

The two-week rule fits an adjustable pillow, since you will be removing fill a little at a time anyway. It still means you cannot send it back on day three.

Against the other three: Saatva also gives 45 nights with free returns, but asks you to wash a used pillow before it goes back. Purple's page text gives 30 nights. Tempur-Pedic says pillows may not be returned unless they arrive damaged or are defective, so a TEMPUR-Neck cannot be returned for the wrong size. The Saatva Latex Pillow review walks through its terms.

Who the Eli & Elm Side Sleeper Pillow does not suit

  • Anyone who wants the option of a refund inside the first two weeks.
  • Anyone whose gap is above about 6.9 inches, the 6-inch maximum plus one box of extra fill, or who does not want to buy extra fill for a gap above 6.
  • Anyone who wants to wash the whole pillow. The fill must never go in the washer or the dryer, and the liner is spot clean only.
  • Anyone buying a King who needs the prepaid label, until Eli & Elm confirms the box size.
  • If you have a latex allergy, ask a doctor before choosing the latex fill, and my about page says why that call is not mine.
  • If your neck or shoulder hurts, that is for a doctor, not for a pillow review.

Where it sits among the four

In the guide, this is the pick for a gap you have not measured yet, or one near 6 inches, because it is the only one of the four whose height you can change at home. Its 5-year warranty matches Tempur-Pedic's and is longer than Saatva's or Purple's 1 year. The costs of that flexibility are the two-week wait, the unrefunded shipping and a maximum that needs extra fill to pass 6 inches.

What this page cannot tell you is how either fill feels, how warm the pillow sleeps or how well it holds its height in your bed. Those are Eli & Elm's claims to make.

One more number worth having. A pillow that fits does not fix a bedtime that lands mid-cycle, and the sleep calculator finds the bedtimes that end a cycle at your alarm. Tonight, measure your gap, write it down next to that bedtime, and compare it with the 6-inch maximum before you pick a fill.