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Care Tips
How Much Space Does Your Rabbit Really Need?
Think a small cage is enough for your rabbit? Think again. Discover how much space your bunny really needs to thrive—and why more room means a healthier, happier pet.
1/15/2025
5 min read
Lucidium Pet Pens
Get Your Pet a PENthouse
Featured Products
Discover our premium collection of clear pet pens designed to keep your pets safe while maintaining your home's beautiful aesthetic.
Sale
27" Tall Small Lucidium Pet Pen
(4.9/5)
27" height
Clear acrylic panels
Easy assembly
EUR 292.95
EUR 339.00
Get It Now, Pay Over Time...
Choose a product to see payment options.
Sale
27" Tall Medium Lucidium Pet Pen
(4.9/5)
27" height
Clear acrylic panels
Walk-through door
EUR 344.95
EUR 399.00
Get It Now, Pay Over Time...
Choose a product to see payment options.
Sale
27" Tall Large Lucidium Pet Pen
(4.9/5)
27" height
Clear acrylic panels
Walk-through door
EUR 396.95
EUR 459.00
Get It Now, Pay Over Time...
Choose a product to see payment options.
Sale
36" Tall Medium Lucidium Pet Pen
(4.9/5)
36" height
Clear acrylic panels
Walk-through door
EUR 439.95
EUR 509.00
Get It Now, Pay Over Time...
Choose a product to see payment options.
Sale
36" Tall Large Lucidium Pet Pen
(4.9/5)
36" height
Clear acrylic panels
Walk-through door
EUR 508.95
EUR 589.00
Get It Now, Pay Over Time...
Choose a product to see payment options.
Lucidium Pen Universal 2 ft. Add-On Kit
(4.9/5)
2 ft expansion
Universal compatibility
Easy installation
EUR 111.95
Get It Now, Pay Over Time...
Choose a product to see payment options.
Our Pet Pen Collection
Choose from our range of premium clear pet pens designed to fit any space and pet size.
Sale
27" Tall Small Lucidium Pet Pen
Perfect for small pets and apartments
(4.9/5)
EUR 292.95EUR 339.00
27" height
Clear acrylic panels
Sale
27" Tall Medium Lucidium Pet Pen
Ideal for medium-sized pets
(4.9/5)
EUR 344.95EUR 399.00
27" height
Clear acrylic panels
Sale
27" Tall Large Lucidium Pet Pen
Spacious pen for large pets
(4.9/5)
EUR 396.95EUR 459.00
27" height
Clear acrylic panels
Sale
36" Tall Medium Lucidium Pet Pen
Extra tall for jumping pets
(4.9/5)
EUR 439.95EUR 509.00
36" height
Clear acrylic panels
Sale
36" Tall Large Lucidium Pet Pen
Largest pen with maximum height
(4.9/5)
EUR 508.95EUR 589.00
36" height
Clear acrylic panels
Lucidium Pen Universal 2 ft. Add-On Kit
Expand your existing pen
(4.9/5)
EUR 111.95
2 ft expansion
Universal compatibility
Lucidium Pen Universal 1 ft. Add-On Kit
Small expansion for tight spaces
(4.9/5)
EUR 85.95
1 ft expansion
Universal compatibility
Featured Accessories
Complete your pet's space with our premium accessories designed to complement your Lucidium pen.
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Modern Luxury Pet Teepee with Memory Foam
Luxurious pet bed with memory foam
EUR 174.00
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4Cats&Dogs Car & Travel Bed
Perfect for car travel
EUR 115.99
🛏️
P.L.A.Y. Houndstooth Lounge Bed
Stylish lounge bed with raised sides
EUR 89.99
🏕️
Shop Teepees
Luxurious pet beds with memory foam
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Shop Flooring
Comfortable vinyl mats for your pen
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Shop Feeders
Modern elevated feeding solutions
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Shop Travel Beds
Perfect for car travel and adventures
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Shop Dog Toys
Fun and engaging toys for your pet
❄️
Shop Chill Pads
Cooling pads for hot days
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Shop Bolster Beds
Supportive beds with raised sides
⭕
Shop Round Beds
Cozy circular beds for curling up
🧠
Shop Memory Foam Beds
Ultimate comfort with memory foam
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Shop Modern Acrylic Beds
Sleek acrylic beds matching your pen
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Easy Access to Care for Your Pet
You can easily walk into your pet's pen through our patented clear door — no more stepping over awkward barriers or crawling through tiny openings. This unique design also makes it possible for us to offer you the tallest clear pen on the market, without sacrificing accessibility or style.
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Fits Your Space
The Lucidium pen is designed to grow with you and your pet. Its modular design lets you choose the size and shape that fits your space, and when you're ready to expand, our Universal Add-on Kits give you the parts you need — no need to buy a whole new pen.
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Connect With Your Pet
Your pet feels more connected when they can see you — and with Lucidium's crystal-clear walls, they can watch you move through your day while staying relaxed and secure. You'll also love how easy it is to check in on them with just a glance, or even through a home camera when you're away.
Why is the CrystalNest Lucidium Pen better than other dog pens?
Patented Walk Through Door
One of the most important features of our pen is the patented walkthrough door. This critical design element allows for all pet owners – short and tall, young and old – to access and enter their pet's pen for cleaning or feeding without struggling to climb over a wall.
Size Matters
Our pens are large! Even our 'Size Small' pen is spacious and comfortable in any apartment or house. We encourage pet owners to provide the largest space possible to ensure the greatest level of comfort and movement and to decrease the feeling of confinement experienced in a typical cage or kennel.
Don't Cage US In
If you have adopted your pet from a shelter, you may know that many rescued animals suffer from crate-hate. They are traumatized by the experience of being confined for long periods of time and they have a particularly strong reaction to being caged. Pets can also feel lonely, powerless, fearful, and anxious in a small enclosure.
Beautiful, Modern Aesthetic
The location of your pet pen within your home is far more important than you may think! Your pet never wants to be excluded from what you are doing; even if they can't sit at the dinner table, they still want eyes on you. Our pens are aesthetically pleasing additions to your décor.
We Are The Original
We are the original clear pet pen, born from our own personal desire to provide a more humane enclosure for our pets. We did not copy or replicate anyone's design – we invented this product and revolutionized the way people think about securing their pets.
High Quality
Each and every indoor dog play pen is made from exceptionally high quality materials that are ready to stand up to your pet with scratch resistant clear panels and sturdy frames. We use stainless steel hardware and aerospace grade aluminum tubing.
Easy, Guided Assembly
Our pet pens are easy to put together using one included tool. Our detailed user guide is clearly illustrated and written in plain english. We also offer a helpful instructional video in case you need a visual reference.
Modular Design
Each model of pet enclosure we offer can be customized in size, configuration, and style. We offer a Universal Expansion Kit, which can be used to expand your current pen by one size OR create a bump-out section, perfect for a potty area or sleeping area.
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Free Shipping
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Secure Checkout
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Customer Service
💳
Payment Plans
Customer Reviews
See what our customers are saying about their Lucidium pet pens and accessories.
👤
"I got this pen for our flemish giant baby's home base. I love how secure it is while also letting her see out and be part of the family when she's not free roaming upstairs. It's sleek and everything you could want in a pet pen. We love it!"
Lena M.
7/10/25
"Love the elevated style, material & convenience of this mat! Highly recommend!"
Shelli M.
6/26/25
"The 1' add-on kit was exactly what I needed! It made a huge difference in the amount of space my bunnies have but not a huge difference in the amount of space it takes up. Easy to put together. I definitely recommend it!"
Shelly R.
7/08/25
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