ASICS Gel-Cumulus 27 GTX Review: Waterproof Comfort Tested

Quick Verdict

The ASICS Gel-Cumulus 27 GTX is a waterproof running shoe that doesn't force you to choose between keeping dry and keeping comfortable. The Gore-Tex membrane handles wet conditions with genuine competence, while PureGEL and FF BLAST+ Eco deliver the plush, responsive ride the Cumulus line has built its reputation on. At its price point it's an investment — but for runners who log miles rain or shine, the cost makes sense. I'd rate it 4.5 out of 5.

What Is the ASICS Gel-Cumulus 27 GTX?

The ASICS Gel-Cumulus 27 GTX is the Gore-Tex-equipped version of ASICS's popular neutral daily trainer. Where the standard Cumulus 27 prioritises breathability for fair-weather runners, the GTX variant adds a waterproof, windproof membrane without overhauling the shoe's core geometry. That means you get the same midsole stack — FF BLAST+ Eco foam sitting atop a full-length PureGEL unit — wrapped in a shoe that can handle puddles, drizzle, and full-on downpours without you reaching for plastic bags over your socks.

ASICS launched the Cumulus line as the plush, approachable sibling to their more performance-focused models. The 27th iteration refines that formula with updated foam and a slightly tweaked upper. The GTX version has been in the lineup since the Gel-Cumulus 22, and with each generation the waterproofing feels less like a compromise and more like a genuine feature upgrade. This version feels like the most cohesive GTX Cumulus yet.

Key Features

• Gore-Tex waterproof and breathable membrane — blocks water, allows moisture vapour to escape
• PureGEL technology — soft, lightweight gel cushioning in the heel and forefoot
• FF BLAST+ Eco midsole foam — responsive comfort with 24% bio-based content
• AHAR (ASICS High-Abrasion Rubber) outsole — durable grip on wet and dry surfaces
• Reflective details — visibility for low-light runs
• Engineered mesh upper — adapts to foot shape without dead spots
• Ideal for running in rainy weather — the membrane genuinely performs in heavy rain

Hands-On Review

I picked these up in early November, right as the weather in my area turned consistently grey and damp. Perfect timing, honestly — I'd been making excuses about skipping runs when the forecast called for rain. The first real test came on a 10-miler in steady drizzle. Not a downpour, but enough to soak through standard trainers. By mile 3, I'd stopped thinking about my feet entirely. That's the highest compliment I can give waterproof gear: it disappears.

What surprised me was the cushioning. I expected the Gore-Tex layer to add stiffness or deaden the ride. It doesn't. The PureGEL in the heel absorbed impact on concrete跑steps and uneven sidewalk sections without that mushy, unstable feeling some gel shoes produce. The FF BLAST+ Eco foam has a subtle responsiveness — not race-day snappy, but it keeps the ride feeling energetic rather than flat. By mile 7, my knees and calves felt fine. By mile 10, I was annoyed the run was ending.

The AHAR outsole earns its keep in conditions where other shoes slip. I hit a few wet metal grates and a painted crosswalk slick with rain, and the traction held without me having to consciously adjust my gait. That's the kind of confidence you want when you're running tired or in low visibility.

There are two honest caveats. First, breathability: below 50°F the Gore-Tex membrane is a non-issue. Above 60°F, your feet will run warmer than in the standard Cumulus 27. Not scorching, but noticeably toasty on a sunny 65°F afternoon. Second, the GTX version adds roughly 20-30 grams compared to the non-waterproof model. For some runners that's nothing; for pace-focused training, it's worth noting.

Who Should Buy It?

• Runners in climates with frequent rain, drizzle, or unpredictable weather — the Gore-Tex membrane is genuinely waterproof, not water-resistant
• Commuter-runners who run to work or run errands in all conditions and need footwear that transitions from wet pavement to office floors
• Neutral runners looking for a plush daily trainer who don't want to sacrifice comfort for weather protection
• Long-run specialists who appreciate soft cushioning on slower, endurance-paced efforts

Skip the ASICS Gel-Cumulus 27 GTX if you train almost entirely in dry conditions and prioritise minimum weight over weather protection — the standard Cumulus 27 is lighter and breathes better for the same core ride. Also skip it if you pronate significantly or need structured stability — this is a neutral shoe, and ASICS's Kayano line is the better choice there.

Alternatives Worth Considering

If you want the same cushioned ride but don't need full waterproofing, the standard ASICS Gel-Cumulus 27 drops the GTX layer and saves about an ounce. It's the better choice for fair-weather runners.

The Brooks Ghost 15 GTX offers similar waterproof protection with a DNA LOFT v2 cushioning system. If you're already loyal to Brooks or want to compare fit, it's worth a look — though Brooks's Gore-Tex implementation tends to feel slightly warmer.

On a tighter budget, the New Balance Fresh Foam X 880v13 GTX delivers waterproof performance and a plush ride at a lower price point. The cushioning profile is slightly firmer, but for daily training in wet climates it punches above its weight.

FAQ

Final Verdict

The ASICS Gel-Cumulus 27 GTX is the rare waterproof running shoe that doesn't make you feel like you're trading away comfort for function. The Gore-Tex membrane works — really works — and the PureGEL and FF BLAST+ Eco midsole delivers the cushioned, responsive ride that makes daily training feel manageable even on tired legs. It's not the lightest option, and yes, your feet will run warm in summer heat. But for runners who genuinely train in wet conditions, those tradeoffs are easy to live with. The Gel-Cumulus 27 GTX earns its place in the rotation as a reliable, year-round trainer.