Certified Quality and Precision Manufacturing
The OPQ UltraShield hot water bag is produced in our MSME‑approved, ISO 9001:2015‑certified facility. Furthermore, it complies fully with IS 1867‑1975 and its 1983 amendment. We follow WHO, PAHO, WTO, and ICH guidelines to ensure material purity and process integrity. Moreover, our fully automated German injection‑molding machines achieve consistent thickness and shape. Consequently, every bag is free from adhesive joints and defects. In addition, each unit undergoes two‑step testing: air pressurization followed by water fill. Therefore, you receive a thoroughly vetted product built for safety and reliability.
Superior Material and Thoughtful Design
Constructed solely from virgin rubber, UltraShield avoids recycled or plastic‑blended compounds. As a result, it feels soft against the skin and minimizes irritation risks. Dermatologists certify our skin‑friendly compound, which includes UV‑stabilizing agents to prevent sunlight damage. Moreover, the generous 42 cm × 22 cm dimensions provide 27% more coverage than typical models. This extra area enables deeper, more even heat distribution across larger regions. Additionally, the lightweight plastic cap balances cost‑effectiveness with durable sealing under high-temperature fills. Therefore, handling and refilling stay effortless for users of all ages.
Advanced Heat Retention Technology
UltraShield’s patented formula extends heat retention by 45% longer than competing hot water bags. The dual‑phase system offers an initial burst of warmth followed by gradual, sustained heat. First, the fast‑release side provides quick relief for sudden aches. Then, the slow‑release face maintains soothing comfort as water cools. Consequently, users adjust intensity by layering a cloth over the fast side before switching. Unlike electric pads, this rubber hot water bag avoids shocks, electromagnetic exposure, and fire hazards. Furthermore, no power source is needed, making it perfect for travel and outdoor use.
Safe Applications and Versatility
Every UltraShield bag passes stringent leak tests to certify 100% integrity. Moreover, its non‑electrical design eliminates fire and shock risks entirely. Thus, it excels in chronic pain management, menstrual pain relief, and cold‑climate comfort. In hilly regions or during winter, it retains warmth under clothing for extended periods. Backed by over 35 years of Krishna Waterproof expertise, it stands as India’s trusted hot water bag producer. Finally, with a manufacturer’s defect replacement policy and UV‑protected longevity, UltraShield offers dependable, natural heat therapy whenever and wherever you need it.
Mahima Patra –
Best discovery of the year! I bought it for period cramps, but now I use it for everything—from neck tension to warming the bed before sleep. The heat is evenly distributed and feels very soothing. The cap is strong and I’ve had zero spills even with frequent use.
Trisha Bhunia –
The bag has a decent capacity and doesn’t take long to fill. I use boiled water and wrap it in a towel—stays warm all night. Slightly stiff rubber at first, but it softens over time. Still, very durable and comforting during back pain or cold mornings.
Rakesh Halim –
I was doubtful about how long the heat would last—but this one stays hot well into the second hour. Great for bedtime use.
Zeeshan Khan –
It’s effective and easy to use, but I do wish they’d add a quick instruction tag for first-timers.
Ranjita Pal –
It works wonderfully, but I do wish the opening was slightly wider. Had to be careful while filling to avoid spills.
Debjit Mondal –
I keep one at my office desk during the winter. Tucked under my coat, it keeps me warm during long meetings. The heat lasts long enough to get me through the workday without relying on central heating. Definitely more eco-friendly and personal than using a space heater!
Madhabi Maity –
I purchased this on a whim during a cold wave, and now I can’t imagine life without it. It warms up quickly and doesn’t lose temperature too soon. My only gripe is that it didn’t come with clear filling instructions—figured it out, but a leaflet would’ve helped.
Rima Bhattacharya –
Heats up in less than a minute, retains warmth for hours without any drop in temperature, and the leak‑proof seal gives me total peace of mind.
Pratiksha Kumari –
Super helpful during winters. Heats up in under 2 minutes, and I can tuck it under my sweater during calls.
Joydeb Saha –
Small, light, efficient—this is a great find. I even used it during a power cut, and it helped me sleep through the cold.
Payel Sinha –
Just right for shoulder pain. The warmth helps my muscles relax. Bonus: it’s super quiet—no humming like electric ones.
Ritesh Shaw –
Keeps me warm while watching late-night movies. No need to crank the heater and waste electricity anymore.
Sneha Mandal –
Absolute lifesaver during my menstrual cramps; delivers consistent, soothing heat that really eases the pain.
Niloy Paul –
Very useful and safe. Doesn’t overheat like some plug-in ones I’ve tried. Just a simple, warm hug in rubber form.
Ankit Ghoshal –
The rubber feels solid and durable, and the size is just right for my back—though I do wish it were an inch wider for full coverage.
Sudipta Paul –
Does what it promises. Heat stays long enough, but a more plushy cover would’ve made it even more comforting.
Pratyush Das –
As someone with frequent back spasms, I’ve tried multiple heat solutions. This hot water bag gives lasting relief without the bulk of electric heating pads. It molds to the curve of my spine and stays warm enough for a full hour-long nap. I just wish it came in more colors.
Arpita Bhunia –
Took this on a weekend road trip and was amazed by its versatility. Used it in the tent for warmth, and even wrapped it around my ankle after a hike injury. The heat retention is impressive, and it handled some rough conditions without a single leak or tear.
Subhankar Maji –
Bought it for my grandmother who suffers from chronic joint pain, and it’s been a blessing. She uses it multiple times a day and insists it helps more than her old electric heating pad. It’s simple, effective, and has become a staple on her bedside table.
Chandni Barman –
This bag’s shape is ideal for cradling against the lower back or stomach. The first use had a slight rubbery smell, but that faded after airing it out. I’ve used it nearly every day since. Would love to see a slightly larger size, but this one still works great.
Amrita Dasgupta –
Bought it for my mom and now she won’t stop raving about it. Her arthritis pain is much more manageable now.
Vikash Shaw –
Fills easily, never leaks, and fits perfectly against my back when I sit on the couch. Great for movie nights.
Jaya Das –
Perfect for people with no time to waste—just pour hot water, seal the cap, and you’re good to go. I use it when reading, when I’m sick, or when the weather turns. It’s simple but dependable. Plus, the cover doesn’t slip or bunch up, which is a huge plus.
Reena Kumari –
I’ve started using this every evening to unwind after work. The heat soothes my neck and shoulders after hours of typing. It’s lightweight, easy to handle, and I even pack it when I travel. No batteries, no fuss, just reliable, warm comfort when I need it.
Abhijeet Sardar –
I didn’t expect a basic hot water bag to become part of my daily routine, but here we are. I use it every evening while watching TV—it warms up fast and stays warm for hours. The soft cover feels lovely against the skin, and I’ve never experienced any leaks. Absolute comfort.
Sumana Roy –
Got this for my teenage daughter who gets severe cramps. It’s become her comfort tool every month. She loves the soft cover and says it helps more than painkillers. It’s easy for her to use on her own, and I feel better knowing it’s safe and reliable.
Rahul De –
Overall, a fantastic product for the price. The rubber is thick but flexible, and the seams feel well-made. I would’ve liked a longer strap on the cover for portability, but for at-home use, it’s pretty perfect. Easy to fill, holds heat well, and doesn’t leak—it ticks all the boxes.
Souvik Chakraborty –
Great product, and very helpful during period cramps. It doesn’t lose heat too fast and fits well against my lower abdomen. My only issue is that the outer cover feels a little rough after washing. A softer fabric or a second cover would make this product flawless.
Chandrani Sinha –
I used to dread winter nights in my hostel until I got this. Now I just fill it before bed and sleep peacefully through the night. It fits perfectly under my blanket and doesn’t spill or get damp. Even my roommate ended up ordering one after trying mine.
Tumpa Dey –
Nice grip on the cap, and the material feels durable. I did find it hard to clean inside, so I rinse it out weekly.
Shivangi Roy –
Saved me from a sore back after gardening. Easy to carry and the heat really helps loosen stiff muscles.
Payel Nandi –
Ideal for menstrual cramps. Soft cover, comfortable shape, and reliable warmth. It’s become my monthly best friend.
Soma Halder –
Held up well during travel. No punctures despite rough handling. Would’ve been perfect with a small pouch included.
Harshita Choudhury –
Would’ve been 5 stars if the cover had a handle for carrying. Still, it works beautifully and doesn’t leak at all.
Sanjukta Ghosh –
Good design and solid performance. Slightly heavy when filled, but that’s a tradeoff I can live with for the heat retention.
Priyabrata Giri –
My teenager loves it for tummy aches, and I steal it for cold feet. Win-win in our house. Might need to get a second one.
Arnab Naskar –
After spraining my wrist, I alternated hot and cold therapy using this same bag. It worked flawlessly for both. The cap seals tightly, and even when inverted, it didn’t spill. For the price, the quality is really solid—I’d recommend it for anyone managing minor injuries at home.
Suman Karmakar –
I didn’t expect a basic hot water bag to become part of my daily routine, but here we are. I use it every evening while watching TV—it warms up fast and stays warm for hours. The soft cover feels lovely against the skin, and I’ve never experienced any leaks. Absolute comfort.
Ayesha Khatun –
First impression wasn’t great due to the smell, but after one use and a rinse, it’s become a constant companion for my sore neck.