The Stroller Sling™ — Black Fox Edition A toddler hammock style stroller seat with built-in storage and roll-up convenience. Adds a second or third seat to most popular strollers — without adding weight or bulk. Designed with built-in storage, a self-packing roll-up design, and safety/comfort-first hardware for everyday convenience. ⭐ Why You’ll Love Black Fox Adds a 2nd or 3rd seat in seconds Works as a toddler hammock stroller seat Up to 45 lbs (toddlers + preschoolers) Built-in stowaway pocket Rolls into itself for easy storage Out-of-the-way buckle for comfort Fold-flat crotch strap (optional use) Soft velveteen fabric Memory-foam pillow included Bonus carabiners included Same Sling. More Convenience. Black Fox is for parents who love the original Stroller Sling™ but want built-in storage and a more streamlined setup — without changing the trusted design. Quick Specs Weight limit: Up to 45 lbs Fabric: Soft velveteen Seat style: Hammock-style toddler seat Storage: Built-in pocket + roll-up self-storage Compatibility: Most popular in-line double or single strollers Care: Spot clean or gentle wash Classic vs Black Fox The Classic Stroller Sling™ offers the same comfort and simplicity in playful colors. The Black Fox Edition adds storage, roll-up convenience, and comfort-focused additions — with the same core design. FAQ Is Black Fox safer than Classic?Nope! Both share the same core design, materials, and hardware quality. Black Fox adds convenience features. Does this add bulk to my stroller?No. It stays lightweight and compact. Is the crotch strap required?No — it’s optional and folds flat when not in use. Will this fit my stroller?It works with most popular stroller brands. Check our compatibility guide to be sure. “What is this product sometimes called?”This product is often searched as a stroller hammock, toddler stroller seat, second stroller seat, third stroller seat, stroller seat attachment, or travel stroller accessory.