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SUMU Cave™

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$89.99 $129.99 Save 30%

SUMU is a heated cat cave that satisfies cats’ instinctive need for warmth, privacy, and tight spaces. Safety from noise and stress, SUMU facilitates restorative REM sleep in cosy heat.

Wellness thermotherapy bed
9-level smart temperature control
Nesting cave hood
Firm air-cell cushion
Premium rabbit-fur lining
Safety timer
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Details
A warm haven of rabbit-soft warmth, covered in a rabbit fur hood.
Key Features
  • Thermal wellness bed
  • 9-level smart temperature control
  • Automated heat monitoring
  • Windproof cave hood
  • Premium rabbit-fur lining
  • Microclimate balance system
  • Removable heat core
  • Hand washable
  • Fits two small cats or a small dog
  • Easy charge USB-C Charging Port
  • Aesthetic design
Measurements
26" Deep × 20.5" Wide × 14" High
Material
  • Outer Material: Premium windproof fabric
  • Hood Inner Lining: Rabbit-fur textile
  • Base lining: Double-layered blanket
  • Cushion: Air-cell firm foam
Returns
30-Day Returns: Try it, love it, or send it back.
What’s Included
  • Premium hooded heated cave (pure white)
  • Anti-slip air-cell cushion base
  • Windproof cave hood
  • Hand-washable rabbit-fur lining
  • Removable heating core
  • 9-level digital thermostat
  • USB-C cable
  • Care instruction guide
FAQs
What if my cat doesn't like the SUMU Cave?
Full refund within 30 days, no questions asked. But in 7 years and 10,000+ customers, we've seen this work because it's designed for how cats are biologically wired. 97% of cats use SUMU CAVE within 24 hours because it satisfies their instinctive need for enclosed, warm spaces.
Why is it called SUMU Cave?
‘To SUMU’ means ‘to rest.’ SUMU Cave is a holistic retreat rooted in Japanese wellness philosophy, where purification (white), warmth (heated bed), and sanctuary (fur cave) are viewed as necessities. SUMU Cave is the retreat of inner peace your cat's heart has been seeking.
Is it safe to leave on all day?
Yes, completely safe for 24/7 use, with smart thermostat technology and Japanese safety certification that exceeds international standards.
How do I clean it?
Simply remove the heating core and gently wash the SUMU Cave. It takes 2 minutes to detach and maintains premium softness wash after wash.
Will it overheat my cat in summer?
No, the 9 heat settings adjust from gentle warmth to balmy heat, or remove the core completely for a year-round windproof sanctuary.
What size cats does it fit?
Perfect for cats up to 20 inches in length (most cats) and even small dogs. The spacious cave provides room without losing that snug, secure feeling.
How long does the heating core last?
The low-voltage heating system is built for years of daily use with proper care (keeping it flat, not folding).
SUMU Cave™
SUMU Cave™
$129.99 $89.99 30% OFF
Japanese Pet Wellness Innovation

The SUMU Method

Smart Thermotherapy
Smart Thermotherapy
9 heat levels with switch-off timer.
Even Distribution
Even Distribution
Uniform heating without cold spots
Removable Core
Removable Core
Easy washing, year-round versatility
Cave Architecture
Cave Architecture
Maintains microclimate and satisfies the instinctive hiding need
Windproof Sanctuary
Windproof Sanctuary
Blocks drafts and muffles noise 60%
Rabbit-Soft Lining
Rabbit-Soft Lining
Feels like snuggling next to another cat

SUMU™ Science Of Sanctuary

97% of cats use their SUMU Wellness Cave within 24 hours
FAST SHIPPING
30 DAY RISK FREE TRIAL
SAFE FOR YOU AND FURBABY
Natural Cave Space Lowers Cortisol
Natural Cave Space Lowers Cortisol
Enclosed, windproof spaces trigger activation of the parasympathetic nervous system (rest-and-digest mode). Your cat's body literally cannot stay in stress response inside a true sanctuary.
Deep Warmth for Longer REM Sleep Cycles
Deep Warmth for Longer REM Sleep Cycles
Stressed and chilly cats never enter deep REM sleep — the restorative phase where bodies heal, and minds reset. 9-level smart temperature control calibrates to exact feline body heat (102°F).  This temperature facilitates REM sleep, which supports cellular repair, memory consolidation, and emotional regulation.
Familiar Fur Texture Delivers Biological Comfort
Familiar Fur Texture Delivers Biological Comfort
Rabbit fur lining mimics the neurological reward that comes from contact with a littermate or birth mom. Kneading behavior releases oxytocin (a bonding hormone) and serotonin (a mood stabilizer).
Aesthetic Luxury Cave, Engineered for Wellness
Aesthetic Luxury Cave, Engineered for Wellness
Premium hood blocks cold drafts from windows, doors, AC vents, and muffles household noise by up to 60%. The purification-focused aesthetic of Japanese wellness spaces makes it a statement piece that elevates your home.