Full Coverage Doublers (FCD) —
Wool Blend Booster & Lightweight Cover
Bumby's most versatile wool layer — booster, barrier, night solution, and lightweight cover all in one. Simple by design, powerful in practice.
Product Description
The Full Coverage Doubler does a lot for a simple piece. Built from a soft heavyweight wool blend — 95% wool, 5% lycra — with clean serged edges, no frills, no hardware. The FCD is designed to work hard across multiple roles without driving up the price. We keep it simple so we can pass the savings on to you.
Whether you're boosting nighttime absorbency, protecting your knit wool from felting, or looking for a breezy lightweight option for the beach, the FCD quietly earns its place in your diapering routine.
Available in XS, S, M, L, and XL with updated sizing that corresponds with our other Bumby diapering products for easy, consistent fitting.
Ways to Use It
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Night boost — heavily lanolize and use solo at night for serious overnight protection
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Felting barrier — layer between your diaper and knit wool cover to reduce felting and dampness
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Performance booster — pull on over the diaper, then add a cover for maximum protection
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Lightweight cover — a simple, cost-effective option for light coverage at the beach or around the house
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Potty learning — a gentle, familiar layer as you transition out of diapers
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Rise extender — when your cover still fits but the rise is getting low, the FCD adds that extra layer right where you need it
Good to Know
The FCD does not stay up on its own — it needs a cover, wrap, or fitted pants to hold it in place. It is not a standalone diaper cover.
Sizing
Sizes run XS through XL, updated to correspond with Bumby's full diapering product range for easy, consistent sizing across your stash.
Material & Care
Heavyweight Wool Blend — 95% Wool, 5% Lycra
Lanolize regularly, Machine wash in cold and lay flat to dry. The FCD takes lanolin well and can be heavily lanolized for intensive nighttime use.