Crib Sheet Fit Guide: Which Solly Baby Sheet Fits Your Crib

Use this crib sheet fit guide to match your mattress size, corner depth, and fabric to the right Solly Baby sheet—without guessing or overbuying.

Publishing teamXI LANGS Editorial

PublishedOct 15, 2026

Page updatedOct 18, 2026

Reading time4 minutes

Crib Sheet Fit Guide: Which Solly Baby Sheet Fits Your Crib

Quick answer

Most standard crib mattresses measure about 52 by 28 inches, so start there. Confirm your mattress depth before buying: a sheet that fits a 5-inch mattress may not fit a 6-inch one. If your crib uses a standard mattress, a Solly Baby sheet in the standard size is the safe first pick. If your mattress is thicker or thinner than average, measure first and choose a sheet with a deeper or shallower pocket.

Measure your mattress before you shop

Take three measurements: length, width, and depth at the corner. Standard crib mattresses are typically 52 by 28 inches, but depth varies from about 4 to 6 inches. A sheet that is too shallow will pop off at the corners; one that is too deep will bunch under your baby. Write your numbers down and compare them to the sheet's stated fit range.

Length: measure from one inner edge to the other along the longest side.
Width: measure the shorter side.
Depth: measure from the top of the mattress to the bottom edge at the corner.

Match the sheet pocket to your mattress depth

Fitted crib sheets rely on an elasticized pocket that wraps under the mattress. If the pocket is deeper than your mattress, the excess fabric can create loose folds. If it is shallower, the corners can slip off during sleep. Look for a sheet whose stated depth range includes your mattress depth with a little room—about half an inch of stretch is enough.

Fabric and fit go together

Stretchier fabrics like TENCEL Modal and cotton knits tend to hug the mattress more forgivingly than stiff woven cotton. That stretch can make a slight depth mismatch less noticeable, but it does not replace correct sizing. If your baby runs warm, a breathable knit can help; if you want a crisper feel, a woven sheet may suit you better. Either way, the sheet should lie flat with no wrinkles.

How to test fit after washing

Wash and dry the sheet once before first use, following the care label. Then put it on the mattress and check all four corners. Run your hand across the surface—if you feel ridges or loose fabric, the fit is not right. A properly fitted sheet stays smooth when you press down and does not lift when you pull gently at the edge.

Decision rules for choosing a crib sheet

If your mattress is standard size and depth: Choose a standard crib sheet that states it fits 52 by 28 inches and your measured depth. Solly Baby sheets are designed for standard crib mattresses. Safe default: standard sheet for standard mattress.
If your mattress is thicker than 6 inches: Look for a deep-pocket sheet or a sheet with a stated depth range that includes your measurement. Standard sheets may not stay put. Measure depth first; do not assume one size fits all.
If your baby is a hot sleeper: Prioritize a breathable knit like TENCEL Modal or cotton. The Mist Pointelle Toddler Sleep Set uses a lightweight TENCEL Modal and cotton knit. Fabric choice affects comfort, but fit still comes first.
If you are transitioning to a toddler bed: You may no longer need a crib sheet. The Cacao Toddler Sleep Set offers made-to-move comfort for growing tots. Match the sheet to the sleep space, not the other way around.

Solly Baby products that support better fit

Blush Floret Solly Dolly: The Blush Floret Solly Dolly is sustainably made from 100% TENCEL Modal and designed to carry a stuffed animal or doll from 0-1,000 months. A soft, familiar doll can help your child settle into a crib routine, and the TENCEL Modal construction matches the gentle feel of Solly Baby bedding.
Cacao Toddler Sleep Set: The Cacao Toddler Sleep Set is made from Solly Luxe, an exclusive blend of TENCEL Modal with a touch of spandex, in made-to-move proportions for growing tots. If your toddler is transitioning from crib to bed, this set offers the same buttery softness as Solly Baby wraps and pajamas, with stretch that moves during sleep.
Mist Pointelle Toddler Sleep Set: The Mist Pointelle Toddler Sleep Set is crafted from Solly Pointelle, a timeless TENCEL Modal and cotton knit, and is lightweight. A lightweight knit option for warmer rooms or toddlers who run hot, while keeping the softness and fit you expect from Solly Baby.