Clam X400 Thermal XT Flip-Over Ice Tent Review & Current Price (2025)
In this detailed review, I’ll walk you through my real user experience with the Clam X400 Thermal XT, share its current U.S. pricing, and explore whether this high-end flip-over shelter is worth the investment in 2025. If you’re seeking elite comfort and space for your family or group ice fishing trips—this might just be the ultimate ice house.
Key Specifications
| Feature | Clam X400 Thermal XT |
|---|---|
| SKU | 116844 |
| Capacity | 4 Persons |
| Fishable Area | 68 ft² |
| Shelter Type | Flip-Over |
| Frame System | 1 ¼″ Thick Pole System |
| Tub Base | Rugged, Molded Polyethylene |
| Insulation | Full Thermal Skin |
| Included Accessories | 2 Light Sticks, Battery Bracket, 4 Deluxe Seats |
| Seat Type | Padded Swivel Seats (4) |
| Setup Time | ~2 minutes |
| Warranty | 3-Year Limited Warranty |
| Current Price (2025) | $1,999.99 (Official Clam USA Retail) |
What Makes the X400 Thermal XT a Game-Changer?
✅ Flip-Over Design for Quick Setup & Mobility
Unlike traditional hub-style shelters, the X400 uses a flip-over design that lets you move, drill, and reset quickly. No folding down hubs or messing with ropes—just pull and flip to deploy or collapse the shelter in under 2 minutes.
✅ Roomy Comfort for the Whole Crew
With 68 square feet of fishable space, this shelter gives each angler enough elbow room for comfort, even with heaters, electronics, or gear bags. Ideal for families, friend groups, or team fishing.
✅ Full Thermal Skin for Maximum Warmth
Clam’s Thermal Trap technology keeps the shelter warm even in below-zero temps. It holds heat, reduces condensation, and keeps wind chill out. In my real-world test, we stayed 50°F+ inside during 5°F windy conditions using just one heater.
✅ Thickest Pole System in the Game
The 1 ¼″ diameter aluminum poles are the toughest in Clam’s entire X-Series. Combined with a reinforced tub base, the structure is ready for extreme cold, wind, and snow without flexing or breaking.
✅ Luxury-Level Seating for 4 Anglers
Most shelters skimp on seating—but not here. The deluxe padded swivel seats are adjustable, removable, and incredibly comfortable for long sessions. Honestly, it feels like sitting in a fishing RV.
✅ Built-In Accessories: Ready to Fish
Unlike many premium shelters where you must buy lighting and battery mounts separately, the X400 comes fully equipped:
- ✅ 2 LED Light Sticks
- ✅ Battery Bracket
- ✅ Pre-installed seat mounts
My Experience: Tested on Mille Lacs Lake, MN
- Setup Time: < 2 minutes solo (flip-over design rocks!)
- Temperature Test: 5°F outside, maintained ~52°F inside with a Buddy Heater
- Fishable Comfort: Fit 4 people with heaters, 4 holes, sonar & tackle—still roomy
- Portability: Pulled behind an ATV smoothly with all gear loaded
- Weather Resistance: No flex or drafts even during 30 mph gusts
- Build Feel: Like an armored ice tank—seriously overbuilt in the best way
🆚 Comparison With Other 4-Person Flip-Overs
| Feature | X400 Thermal XT | Otter Vortex Pro Lodge | Frabill Citadel 3255 |
|---|---|---|---|
| Fishable Area | 68 ft² | 67 ft² | 63 ft² |
| Seating Included | 4 Padded Swivels | 2 Bench Seats | 2 Molded Seats |
| Setup Type | Flip-Over | Flip-Over | Flip-Over |
| Insulation | Full Thermal | Thermal-Tec 600D | Full Thermal |
| Included Accessories | Lights + Battery | None | None |
| Warranty | 3-Year | 1-Year | 1-Year |
| Price (USD) | $1,999.99 | $1,749.99 | $1,499.99 |
Verdict: The Clam X400 is the most premium, complete, and durable 4-person flip shelter currently on the U.S. market. It comes fully loaded with accessories and offers best-in-class insulation and build quality.
Other 4-Person products
✅ Pros and Cons
Pros
✔️ Fast flip-over design for mobile ice fishing
✔️ 68 ft² fishable space with full thermal insulation
✔️ Strongest frame and tub in Clam’s lineup
✔️ Comes with seats, lights, and battery mount—no need to buy extras
✔️ 3-Year Warranty (industry-leading)
✔️ Padded comfort seats — excellent for long sits
Cons
➖ Heavy (may need ATV or snowmobile for long hauls)
➖ High price point ($2,000), not for beginners
➖ Limited availability in peak season
Final Verdict: Should You Buy the X400 Thermal XT in 2025?
If you’re a dedicated ice angler or family fisher who wants maximum comfort, premium build quality, and convenience—then yes, the Clam X400 Thermal XT is absolutely worth it.
For the serious angler, this isn’t just a shelter—it’s a mobile fishing fortress that turns brutal winter into a comfortable, enjoyable experience. The extra investment brings unmatched warmth, room, and durability. If you’re planning full-day trips or multi-person fishing, this is as good as it gets.