What Are Fabric Finishes, and Should They Be in Baby Clothes?
A fabric finish is something added to fabric to change how it feels or performs. Some finishes can be useful, but for baby and toddler clothing, we think every added finish should have a clear reason.
At Chuckwalla, we strive to avoid unnecessary added finishes. We would rather choose the right fiber, knit, weight, construction, and tested performance from the beginning.
Processing Is Not the Same as an Added Finish
Almost every modern fabric is processed in some way before it becomes clothing. Fibers may be washed, spun, knitted, dyed, heat-set, pre-shrunk, brushed, or cleaned before the final garment is made.
That does not automatically make a fabric bad. It just means “natural” does not always mean untouched.
Merino wool is a good example. It starts as a natural fiber from sheep, but before it becomes a soft baby base layer, it has usually been washed, cleaned, spun, dyed, and sometimes treated or blended to improve softness, washability, stretch, or durability.
The better question is:
What remains in the finished fabric, what purpose does it serve, and is it necessary for baby and toddler clothing?
At Chuckwalla, our goal is not to pretend fabric is untouched. Our goal is to choose materials carefully, understand the testing, and avoid unnecessary added finishes when the same performance can come from the fiber, knit, weight, construction, or design
Softening Finishes
What it does: Makes fabric feel smoother, silkier, or softer.
Why it matters: “Soft” is one of the first things parents notice. That softness can come from the yarn, knit, fiber choice, or fabric weight. It can also come from added softening agents. For example, silicone softeners can be used in textile finishing to create a slicker, smoother, or more “buttery” feel. These finishes may be applied after dyeing or processing to reduce stiffness and improve first-touch softness.
Can it be achieved without an added finish? Often, yes. Softness can come from better material choices and construction: fine fibers, smooth yarns, gentle knits, good fabric weight, careful washing or brushing, flat seams, and tagless labels.
Chuckwalla view: We want softness parents can trust. Softening finishes are not automatically bad, but they raise important questions: What was added? Does it remain on the fabric? Could it matter for sensitive skin? Does it affect breathability, moisture movement, durability, or wash performance? Does it add unnecessary chemical processing? For baby and toddler clothing, we prefer to build softness into the fabric and garment instead of relying on extra softening finishes.
Moisture-Wicking Finishes
What it does: Helps moisture spread across the fabric so it can move away from the skin and dry more easily.
Why it matters: Moisture-wicking is not the same as waterproof. It does not stop fabric from getting wet. It is about how the fabric behaves once moisture is there.
On a hike, babies and toddlers can get damp from sweat, drool, spills, water play, weather, or even a parent’s sweat in a carrier. If that moisture sits against their skin, the fabric can start to feel cold, clingy, or clammy. That matters because outdoor conditions change. A child may be warm while moving or riding close to a parent, then get chilled when the wind picks up, the trail turns shady, or the group stops for a break.
A wicking finish is an added treatment that helps moisture spread across the fabric instead of staying in one wet spot. Spreading moisture out can help it dry faster.
Can it be achieved without an added finish? Often, yes. Moisture comfort can come from choosing the right fiber, knit, fabric weight, and construction. Cotton absorbs moisture and can stay wet longer, which is why it is usually not the best base layer for active outdoor use. Lyocell can feel smooth, breathable, and comfortable for lower-to-moderate activity, but it is not the same as a true technical base layer. Merino can handle some dampness while still feeling comfortable, making it a strong choice for changing outdoor conditions. Polyester absorbs very little water and can dry quickly when the fabric is built well, making it useful for higher-output activity and hot-weather performance.
Chuckwalla view: For outdoor clothing, we care less about the buzzword “moisture-wicking” and more about how the fabric actually feels when a child gets damp. For active base layers, we generally look to merino or well-built polyester. For softer, lower-to-moderate activity pieces, we like lyocell when the finished fabric performs well. Our goal is moisture comfort through the right fiber, knit, construction, and testing.
UPF Protection
What it does: Helps block UV rays from reaching the skin.
Why it matters: Covered skin is not always protected skin. UPF 30 blocks about 97% of UV rays, while UPF 50 blocks about 98%. By comparison, a thin everyday cotton T-shirt may have a much lower UPF, sometimes around 5–7, depending on the weight, color, knit, and stretch. That is why outdoor baby and toddler clothing should be tested for UPF, not assumed.
Can it be achieved without an added finish? Yes. A fabric can block UV because of how it is built: tight knit, fabric weight, fiber type, color, stretch, and coverage. The other route is an added UV finish. That means UV-absorbing or UV-blocking chemistry is applied to the fabric, sometimes as a coating or finishing treatment. Depending on the finish, it may be more or less durable. Some treatments are designed to last through washing, while others can weaken as the garment is washed, worn, stretched, sweated in, or abraded.
Chuckwalla view: We choose fabrics where sun protection comes from the finished fabric itself and is confirmed through testing and certification.
Antimicrobial or Odor-Control Finishes
What it does: Helps fabric smell fresher by reducing odor or affecting odor-causing microbes.
Why it matters: These finishes are usually made for adult athletic clothing sweating hard between washes. But babies and toddlers are different. Their skin is still developing, their skin microbiome is still developing, and their clothing sits close to their bodies for long stretches of time. Their clothes also need washing for drool, food, spit-up, sunscreen, diaper leaks, dirt, and outdoor mess. Odor control does not solve most of those problems.
Can it be achieved without an added finish? Sometimes. Merino wool can naturally resist odor buildup through moisture and odor management. That is different from adding an antimicrobial treatment like silver, copper, zinc, chitosan, or another microbe-affecting finish.
Chuckwalla view: We do not use antimicrobial, antibacterial, odor-control, anti-stink, or freshness finishes. For babies and toddlers, fresher-smelling fabric is not worth adding a treatment designed to affect microbes. Their skin and skin microbiome are still developing, their clothing sits close to their bodies, and odor control does not solve the real reasons baby clothes need washing.
Water-Repellent, Stain-Resistant, and PFAS Finishes
What it does: Helps water, stains, or oil bead up instead of soaking into the fabric. PFAS are one group of chemicals that have been used to create this kind of water-, stain-, or oil-resistant performance.
Why it matters: Water and stain resistance can sound useful, especially for kids. But for baby and toddler clothing, the question is whether that feature is truly needed. PFAS are often called “forever chemicals” because many do not break down easily in the environment. They have been commonly associated with durable water-repellent, stain-resistant, and oil-resistant finishes, especially in outerwear, gear, and performance textiles.
Can it be achieved without an added finish? Light protection can sometimes come from tight fabric construction, fiber choice, fabric weight, wool, dense synthetics, or smart layering. But strong water beading, stain resistance, oil resistance, or rainwear-level performance usually requires some kind of finish, coating, membrane, or laminate.
Chuckwalla view: We do not use PFAS. Water resistance, stain resistance, or oil resistance is not worth adding a forever-chemical finish to baby and toddler clothing. Our focus is fabric performance without PFAS.
The Bottom Line
Fabric performance should make outdoor days better for babies and toddlers. It should not add complexity just because a feature sounds impressive.
At Chuckwalla, we choose fabrics for the things young children actually need outside: sun protection, softness, breathability, movement, durability, moisture comfort, and comfort against developing skin.
Our approach is simple: build performance through the right fiber, knit, weight, construction, and testing, and leave out unnecessary added finishes whenever we can.
