---
product_id: 48078216
title: "SB-M300"
brand: "active era"
price: "Rp429123"
currency: IDR
in_stock: true
reviews_count: 8
url: https://www.desertcart.id/products/48078216-sb-m300
store_origin: ID
region: Indonesia
---

# Water-resistant 190T polyester shell Advanced zipper with internal secure pouch 300 GSM double-layer ultra-warm fill SB-M300

**Brand:** active era
**Price:** Rp429123
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay Toasty, Travel Light – The Ultimate 3-4 Season Sleeping Bag

## Quick Answers

- **What is this?** SB-M300 by active era
- **How much does it cost?** Rp429123 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/48078216-sb-m300)

## Best For

- active era enthusiasts

## Why This Product

- Trusted active era brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Security:** Internal pocket safeguards your valuables, plus zipper engineered to never snag.
- • **Sleek Mummy Fit:** Ergonomic mummy design with drawstring hood locks in warmth and blocks drafts.
- • **Next-Level Warmth:** Double-layer 300 GSM filling traps heat for 3-4 season comfort, even down to -10°C.
- • **Effortless Maintenance:** Fully machine washable for hassle-free cleaning after every adventure.
- • **Weather-Ready Durability:** Water-resistant outer shell keeps moisture out while staying lightweight and tough.

## Overview

The Active Era Professional 300 Warm Mummy Sleeping Bag features a premium double-layer 300 GSM hollow fibre filling and a durable water-resistant 190T polyester shell, designed for 3-4 season use in temperatures ranging from 0°C to -10°C. Its ergonomic mummy shape with a drawstring hood maximizes heat retention, while the advanced zipper and internal secure pouch add convenience and security. Lightweight, machine washable, and compact with a compression bag, it’s the perfect companion for camping, hiking, and outdoor enthusiasts seeking reliable warmth and durability.

## Description

Active Era - Warm M300 Sleeping Bag: This premium quality, 3-4 season sleeping bag from Active Era is made from a durable 190T polyester outer shell, with an ultra-warm 300GSM double filling for use in temperatures from 0°C to 10°C and extreme temperatures down to minus 10 degrees Celcius. Both the compression bag and sleeping bag's outer shell are water resistant in damp environments, and it is fully machine washable too.  Instead of a single 300GSM filling, this professional sleeping bag is packed with a double layer containing 2 x 150g/m² hollow fibre layers, and a drawstring hood. This provides a considerable increase in insulation and warmth compared to a regular single layered 300GSM sleeping bag, and ideal for use outside in both winter and summer.   Features 300GSM (2 x 150g/m²) ultra-warm filling. 190T Polyester durable outer shell - Water resistant against damp. Fully Machine Washable. Double zipper system with windproof draft tube lining for extra insulation. Secure internal pouch for valuables (mobile phones, electronics, accessories). Additional internal drawstring collar pulls above the shoulders to keep out unwanted drafts and wind. · Dimensions Length: 220cm, Width at Top: 80cm, Width at Feet: 55cm.

## Features

- ULTRA-WARM 3-4 SEASON: This sleeping bag has been designed with a 300GSM (2 x 150g/m2) double-layer filling making it perfect for use in 3-4 seasons. Whether you are camping, hiking, or travelling this sleeping bag for adults and kids will keep you warm and comfortable after a long day of activities.
- COSY MUMMY DESIGN: The figure-hugging mummy design tapers in at the leg, this design is more efficient in keeping you warm in colder temperatures than regular rectangle sleeping bags. A built-in hood with drawstring helps to keep your head as warm as your body.
- FOR ADULTS, TEENS & CHILDREN - This single sleeping bag measures 220 x 80 x 55 and is perfect for all ages. Compression bag included for easy carrying.
- WATER RESISTANT & MACHINE WASHABLE: This Active Era sleeping bags for boys and girls is treated with an invisible water-repellent layer to ensure it keeps you dry in damp weather whilst remaining lightweight and durable. The hard-wearing and easy to clean material means the sleeping bag is fully machine washable too.
- UPGRADED ZIPPER & INTERNAL POCKET: Our advanced zipper design ensures your zip never gets caught when opening or closing the sleeping bag. Keep your valuables safe overnight by using the internal storage pouch.
- ACTIVE ERA CAMPING SUPPLIES – Active Era is one of the UK’s fastest growing camping brands with a range of sleeping bags, Camping beds, camping mats and tents. Trust Active Era for your next camping trip!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age range | Adult |
| Color | Blue |
| Size | Mummy |
| Style | Mummy |
| Shape | Mummy |
| Material type | Polyester |
| Maximum height recommendation | 220 Centimetres |
| Number of items | 1 |
| Outer material | Polyester |
| Seasons | 3 Seasons |
| Features | Windproof |
| Sport | Camping and Hiking |
| Batteries included? | No |
| Brand | Active Era |
| Fill material | Polyester |
| Department | Men's |
| Manufacturer | Active Era |
| Item model number | SB-M300 |
| Product Dimensions | 40 x 20 x 20 cm; 1 kg |
| ASIN | B018L84HEM |

## Product Details

- **Brand:** Active Era
- **Colour:** Blue
- **Occupancy:** 1 Person
- **Shape:** Mummy
- **Seasons:** 3 Seasons
- **Temperature rating:** Winter/Spring/Autumn
- **Age range (description):** Adult
- **Sport:** Camping and Hiking
- **Special feature:** Windproof
- **Material:** Polyester

## Images

![SB-M300 - Image 1](https://m.media-amazon.com/images/I/61dbHXc6kWL.jpg)
![SB-M300 - Image 2](https://m.media-amazon.com/images/I/71nU3FtExfL.jpg)
![SB-M300 - Image 3](https://m.media-amazon.com/images/I/71g+rD2LkAL.jpg)
![SB-M300 - Image 4](https://m.media-amazon.com/images/I/710baWq0McL.jpg)
![SB-M300 - Image 5](https://m.media-amazon.com/images/I/71l3O6xxsyL.jpg)

## Available Options

This product comes in different **Colour Name, Style Name** options.

## Questions & Answers

**Q: Is this sleeping machine washable? One reviewer said it wasn't; I just wanted to check.**
A: This is not machine washable. Instructions on the label are as follows: hand wash max 30 degrees. Do not machine wash. Do not tumble dry.

**Q: How big is this in its carry bag?  Looking for one that will fit in my son's backpack.**
A: It depends on the size of the Rucksack but this sleeping bag in its carry bag is 16inch long by 9inch diameter

**Q: Can you zip 2 together to make double?**
A: I believe the zip isn't open ended so you wouldn't be able to join them together.  Also the shape of the bag wouldn't make it practical to join two together.

**Q: I’m 6ft and 18 stone heavy so I’m a big guy. Will there be room in for me as I’m wide!?**
A: The length would be fine but width wise I'd say you'd be very snug.  I think it would only work if you were to sleep on your back with your arms out of the bag.  To give you an idea I'm 5'6" and about 10.5 stone and I feel snug/a bit restricted when the bag is zipped up.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Snug as a bug.
*by W***E on 3 September 2024*

This sleeping bag really does exceed expectations, it gets warm and snuggly within seconds of getting in it.The drawstring top makes it easy to convert to a mummy sleeping bag if you get cold when out camping.The fact you can use it as a double or two singles is very convenient and saves on arguments when the grandchildren want a sleep over.Great quality, suitable for all ages, not too bulky, I would highly recommend it and will be buying more for our next family camping trip.

### ⭐⭐⭐⭐⭐ but I was comfortably warm. Impressed withe the price and quality
*by G***R on 17 May 2018*

Used the bag for the first time at the week end and was well impressed. Night temp was about 8 degrees, but I was comfortably warm.Impressed withe the price and quality, no lose threads.The zip functions well inside and out with no snagging.I was on a motor bike so was impressed with the small pack size which fitted neatly into my pannier. I also tried it in my 35 litre ruck sack and it fitted snuggly in the base, so will be handy for summer wild camping.I'm 12 stone and 5'9. Had enough room to move around in my sleep and didn't feel pinned in like I have with more expensive bags.I think for colder night the addition of a thin micro fleece liner would help extend the bags lower temp range with out compromising inner room.All in all a good well made resonably priced sleeping bag.

### ⭐⭐⭐⭐ Superb product, needs instructions for storing in bag provided.
*by M***R on 26 July 2016*

The sleeping bag arrived very quickly, was loaded into my motorhome ready for use the same evening and off I went on what turned out to be the hottest weekend of this year! I opened the very nice protective bag, pulled out the sleeping bag and this was my biggest mistake - read on....The actual bag is lovely, lightweight, soft material very nicely lined and invites you to climb in straight away!I unzipped it, being careful not to catch the zips in the edge of the lining, snuggled inside, put my pillow in the hood, zipped up and found it a bit too restrictive across my shoulders. The bag measures 21" across and I measure 18", so very little room to manoeuvre IF you want it zipped right to the top, however, it does wrap itself warmly around you, is almost 7ft long and I had the most comfortable night ever in my van.My mistake was not taking note of how it was packed into the protective bag. I have tried all ways to fit the mummy bag back inside and failed, so the sleeping bag is now stored in a "bin bag", which doesn't do it justice and is very disappointing.Could The Body Source please include instructions on how to do the above, which I am sure would be greatly appreciated by customers, especially those camping outdoors. Apart from that annoyance, as long as you are not a very broad and over 7ft tall I can thoroughly recommend the bag!

## Frequently Bought Together

- Active Era Professional 300 Warm Mummy Sleeping Bag - 300 GSM Double Layer Filling - 3-4 Season for Camping, Hiking, Outdoors (Blue) (Blue, Mummy)
- HiiPeak Sleeping Pad - Ultralight Inflatable Sleeping Mat with Built-in Foot Pump, Durable Compact Waterproof Camping Air Mattress for Camping, Backpacking, Hiking, Tent Trap Traveling

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-02-26*