If you’re using a sleeping bag that has a tog rating at the higher end of the suggested temperature range, then it won’t be necessary to put your baby in anything other than a vest. However, for temperatures below 18°C, a long-sleeved romper can be worn. Material Definitely Asda. Cheap, nice patterns and feel so comfortable (I'd like one myself!). They came top in tests conducted for safety too." (Recommended by Mumsnetter DaisyF1986) Our verdict It’s very important that your baby does not overheat at night, so read the manufacturer’s instructions carefully about the tog rating. Enter baby sleeping bags, which promise to offer a way to keep your baby covered while they sleep through the night (wishful thinking), and to give you some peace of mind. That being said, there’s been plenty of discussion around the safety of baby sleeping bags. How can you make sure that your baby is warm enough, but not too warm, in a baby sleeping bag? What about the risk of them accidentally wriggling down into their sleeping bag? Both organic cotton and bamboo viscose are eco-friendly and hypoallergenic. Best of all, poppers on each side can be opened to convert the Cocoon Swaddle Bag to a sleeping bag. ErgoPouch recommend doing this as soon as your baby can roll, but this is a great bit of flexibility that may come in handy if your baby suddenly decides they prefer their arms unencumbered, and it’s not one we saw in any other product.

This one’s made from soft and stretchy cotton jersey and has a cute star print. As well as the nappy changing zip, there’s a zip at the side for getting your baby in and out of the sleeping bag with ease.Mumsnetters really rate Snuz products, which appear in our guides to the best moses baskets as well as the best cot beds. When it comes to the fabric from which it’s made, the best sleeping bag for a baby will be breathable, preferably hypoallergenic, and soft and gentle on their delicate skin. Organic soft cotton or bamboo are good options. In addition, a sleeping bag that’s easy to clean, preferably machine washable and also tumble dryer-safe, will spare you the hassle of hand-washing it when it inevitably gets dirty. Closing Baby sleeping bags arrive with button, snap or zip fasteners, and which you choose is really a matter of personal preference. In our opinion, a two-way zip for both top and bottom opening is handy for nappy changes as well as getting the baby in and out of the sleeping bag. A zip is also less fiddly than buttons or poppers – although it might prove more difficult to locate the zip connections in the dark, in the middle of the night, where buttons are easier to do up blindly. We have the super love merino ones which are also 0-2. They are much thinner than usual ones so not bulky. They have poppers under arms to use when small so they can’t slip down. Ds started using around 3-4 months and they seems comically long, but after a month is so seemed to fit perfect. He’s still using now at 1 year and they feel lovely and soft still. They still have growing room." (Recommended by Mumsnetter Caspianberg) Our verdict

Little spillages can be sponged off, but it’s likely that your baby sleeping bag will need machine washing regularly. Follow the manufacturer’s instructions about washing temperatures and tumble drying. Another vote for Slumbersac. They are great - we have several for our toddler." (Tried and tested by Mumsnet user Elune) Our verdict

Shoulder poppers are another helpful feature for dressing and undressing. Almost all sleeping bags should have under-arm poppers to ensure a good, secure fit for a smaller baby. Some, such as the SnüzPouch, might have an extra zip at the front for changing a nappy without having to remove the bag. 4. Washing instructions Key specs – Material: 30% organic cotton, 70% bamboo; Tog: 0.5; Closing: Zip, side shoulder opening, armhole poppers; Sizes: From 8-9lbs to 24 months; Washing instructions: Machine wash at 30°C It’s easy to see why – using a baby sleeping bag means you don’t have to worry about how much bedding to use, it keeps the baby contained and warm all night (no matter how much they wriggle), and is much easier to carry around out of the house than a pile of blankets.According to GroBag, the company credited with popularising the bag in the UK, around 95% of parents now use one. A lighter sleeping bag, such as this clever 0.5-tog version from MORI, can be a great option in all weather. On warm nights, with your baby in a vest, it’s perfect; while in colder weather, you can add a couple of layers of clothing to keep the baby warm. Made using a soft as well as sustainable fabric, it arrives in five delightful colour/pattern options – and, as an extra perk, you can also get it personalised. Experts recommend that you keep your baby’s crib free from blankets, pillows and toys until their first birthday, as a precaution against SIDS. Baby sleeping bags are the ingenious alternative which keep your baby cosy and safe while they sleep. What’s more, the best baby sleeping bags zip or popper closed so that you don’t need to worry about your child wriggling out of their bedding and waking up chilly - especially as many of us are watching the thermostat more carefully this winter. We liked gro bag too, but only bought them in tkmaxx. They have great resell value." (Loved by Mumsnet user cookielove) Our verdict

With its unique half-moon zip, changing nappies is a doddle when your baby wears a Snuzpouch. Anything that makes those late-night changes any less disruptive to everybody’s sleep is a winner in our book.

Designed to be halfway between a traditional sleeping bag and ordinary nightwear, a baby sleeping bag is, essentially, a fabric vest (with or without sleeves, depending on the brand) that ends in a wide, cosy bag for the legs. The Jojo Maman ones which are like little padded suits are fantastic if you have a wriggler or baby who likes to walk in their sleeping bag. Really handy for the car as well. Bonus points for how comical the baby looks when they're walking around like a tiny Michelin man." (Tried and tested by Mumsnet user TerribleCustomerCervix) Our verdict