Bring the magic of the ocean to your child’s party with our 18 x 12ft 3D Mermaid Bouncy Castle & Slide. Perfect for girls’ birthdays, themed parties, and kids’ events, this inflatable transforms any garden or venue into an under-the-sea adventure.
Underwater Adventure for Kids’ Parties
Dive into a world of mermaids and sea creatures! Featuring a 3D mermaid atop a giant pearl, inflatable sea plants along the slide, and vibrant under-the-sea artwork, this castle creates a fully immersive experience. Children will love bouncing, climbing, and sliding while exploring their own magical underwater world.
Safe, Spacious, and Fun Bouncy Castle
Designed with safety and fun in mind, this inflatable provides:
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Extended bouncing area for multiple children
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Soft, secure surface for safe play
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Durable construction suitable for repeated use
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Perfect for toddlers and children up to around 8 years old
Your little party-goers can enjoy hours of active fun while parents relax knowing the environment is safe.
Perfect for Girls’ Birthdays and Special Events
Whether it’s a birthday party, family celebration, or themed event, the 3D Mermaid Bouncy Castle & Slide is a hit with children. Its mermaid and under-the-sea theme guarantees a magical experience that will keep kids entertained from start to finish.
Delivery Across Bedfordshire and Surrounding Areas
We deliver our Mermaid Bouncy Castle to:
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Bedford
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St Neots
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Potton
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Biggleswade
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Sandy
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Little Paxton
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Surrounding villages
No matter where your party is, we bring the excitement straight to your doorstep.
Key Features
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18 x 12ft 3D Mermaid Bouncy Castle with Slide
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Eye-catching mermaid figure and underwater theme
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Safe and spacious for multiple children
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Perfect for girls’ birthdays and kids’ parties
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Available for hire across Bedford, St Neots, and nearby areas
FAQ
Q: What ages is this inflatable suitable for?
A: Ideal for toddlers and children up to around 8 years old.
Q: Can it be used indoors?
A: Yes! Perfect for halls, sports venues, or home setups.
Q: Which areas do you deliver to?
A: Bedford, St Neots, Potton, Biggleswade, Sandy, Little Paxton, and surrounding villages.
Experience that helps your event run smoothly
With more than two decades supplying parties, schools and larger events, we understand that good hire service depends on practical planning as well as the equipment. Our full-time team can discuss your venue, access and timings and help you choose a suitable option. Find out why book with Sundorne, or browse our testimonials.
Getting ready for delivery
Before booking, check the product’s stated dimensions and suitability, including ceiling height for indoor venues and clear access for our delivery team. Tell us about steps, narrow gates or restricted access in advance. We supply and set up the equipment, then explain its use at handover. For blower-powered inflatables, a suitable mains socket is normally needed within 25 metres of the blower; discuss alternatives with us if power is unavailable.
Outdoor hire and the weather
For outdoor inflatable hire, we install on suitable natural grass only. We do not set up on concrete, tarmac, patios or artificial grass. Our guide to surfaces and anchoring explains why. Outdoor hires also depend on suitable weather; read our wind-speed guide before planning your event. From November to April, our inflatable hires are indoors only.
Equipment care and inspections
Annual inspection is one part of looking after our inflatables. We use PIPA/RPII testing and inspection against the applicable BS EN 14960 requirements, with manufacturer-supplied PIPA tests on some new units and an approved RPII inspector for ongoing annual inspections. Read our testing and inspection information.
Supervision and safe use
A responsible adult aged 18 or over must supervise equipment left in your care throughout the hire. Follow the product’s user limits and the instructions given at setup. Our bouncy castle safety information and health and safety guidance explain the wider precautions we take.
Planning the hire
Check availability and the booking total for the date and hire period you need, including any delivery charge or selected extras. If your venue has fixed access times, or you need a different collection arrangement, speak to us before booking. We can help match the equipment and timing to your event.
Check the room around the equipment
A castle and slide combination needs room for both the bouncing entrance and the slide exit. Include the blower, anchoring space and delivery access when planning the layout. For a hall, check ceiling obstructions and allow a clear route between the inflatable and other activities.
| | Width | Length | Height |
| Unit Size: | 12.1ft | 18.2ft | 12ft |
| Required Space: | 16ft | 25ft | 12ft |
| Required Access Width: | 3ft | | |