Leak-Proof Power

Lined with waterproof PUL to lock in moisture and keep covers reusable longer.

Super Absorbent Combo

Includes a fast-wicking charcoal insert and a thirsty bamboo insert—your dream team for heavy wetters.

Eco-Friendly & Long-Lasting

Reusable, machine washable, and built to survive years of diaper duty.

Built to Last, Designed to Perform

Built to Last, Designed to Perform

Meet The Tank Cloth Diaper Insert Set—your ultimate defense against leaks, rashes, and late-night surprises. This powerhouse duo features a small charcoal insert for fast absorption and a large bamboo insert with waterproof PUL backing for maximum protection. Together, they keep your little one dry and comfy for hours. Stain-hiding materials, surprise printed backs, and durable construction make The Tank both functional and fun.

Why “The Tank”?

Why “The Tank”?

Named for its unbeatable strength and endurance, The Tank is made to go the distance. With the capacity to handle heavy wetters, marathon sleepers, and years of use, it’s a true workhorse in your diaper stash. Engineered for serious leak protection and lasting comfort, it’s proof that diaper inserts can be tough, reliable, and still totally adorable.

Easy, Adaptable, and Built for Real Life

Whether you’re a new parent or a seasoned pro, The Tank makes cloth diapering simple. Designed to fit any Lil Helper diaper generation, these inserts adapt to your baby’s needs from newborn to toddler. Easy to wash and built to handle countless laundry cycles, The Tank keeps performing wash after wash, giving you reliable protection that grows with your little one.

How do I Wash the Tank Insert Set?

Parenting’s messy enough—your laundry routine shouldn’t be. The Tank inserts are simple to care for: unsnap, rinse, wash on warm, and hang to dry (or tumble low if you’re in a rush). Durable materials and reinforced stitching mean they’ll withstand countless washes while staying soft, absorbent, and ready for the next round.

FAQ

Looking for more specs on the Tank? Our five-star poop-fighting generals have compiled all the intel you need to draw your battle plans.

Full FAQ Page

Newbie Guide

Our Tank Insert set is able to absorb up to 300 mL of liquid. The Tank Insert set features a small insert that is topped with our stay-dry charcoal to keep your child comfortable, and a large insert made of bamboo for extra absorbency and a PUL backing that allows you to reuse your diaper covers through more than one change.
Small Charcoal Insert- Top layer is Charcoal and 2 inner layers are Microfiber- both of which are 100% Polyester, the bottom of the insert has a stitched on bamboo stay dry liner to help disperse pee evenly across the large insert. Large Bamboo Insert- Top layer is a bamboo (80% bamboo, 20% polyester), followed by a microfiber layer and backed by a water-proof PUL for maximum protection from leaks! You can see a full breakdown here!
  • Make sure any solid “stuff” is already out of the diapers, inserts, and liners before you throw them in the washer.
  • Be sure to unsnap the inserts from the diaper cover and each other before washing.
  • Pre-wash the diapers (short cycle) in warm water using the recommended brand and amount of detergent. We recommend Tide Original to Line 1.
  • Heavy Duty (longest cycle) warm/cold wash with proper detergent amount. We recommend Tide Original, amount depends on size of load.
  • Hang to dry as often as you can, tumble dry low if you are in a rush!

For personalized help with your wash routine, please check out our Wash Routine Help App , read our Blog or reach out to us at delight@lilhelper.ca for more help.

The Large Tank Insert is approximately 32.5 cm or 13 inches long. The small Tank Insert is approximately 26 cm or 10.5 inches long. Remember, these inserts work together except for very small babies, so over all, the Tank Insert set is approximately 13 inches long.