Hello I understand that weighted blankets are a hazard to babies due to suffocation risk etc but what about a weighted sleep sack ? Is their any guidelines as to whether these are safe ? Dreambabyco an American Company have made one claiming they were safe however American legislation is different to Australian so I’m wanting to find out what Australian legsitlation or regulations or guidelines we have here have to say as you can get them posted over ?

Red Nose have no specific information about these products in relation to safety, however you are correct maybe a risk of suffocation, particularly if the baby were to roll under a weighted blanket.
There may also be a risk of overheating & a potential risk if any magnets were to become loose from the sleep bag, that baby/toddler might be at risk of choking.

Not sure of the marketing rationale for these products, but think there is some association with settling, sleeping longer but most significantly reducing the ability of baby to roll.
This, of course carries risks, as rolling is a normal development stage & a safe environment for rolling to occur should be provided, rather than trying to stop it.
Also, it is important that young babies wake regularly during day & night to ensure their nutritional needs are met. bag

I am not aware of any safety standards for weighted sleeping bags in Australia
Safety Standards in Australia as developed & monitored by Product Safety Australia (ACCC)
https://www.productsafety.gov.au/products/babies-kids
Safety Standards in USA - https://www.cpsc.gov/

Red Nose recommends using a sleeping bag that has appropriate size neck & arms holes & no hood.
This is to prevent overheating & head/face being covered.
Any bedding should be of light weight material.

A good way to avoid face covering is to use a safe baby sleeping bag (one with fitted neck, armholes or sleeves and no hood). If using bedclothes rather than a sleeping bag, it is the best to use layers of lightweight blankets that can be added or removed easily according to the room temperature and which can be firmly tucked in.
https://rednose.org.au/article/protecting-baby-from-overheating-during-sleep
Using lightweight blankets/sleeping bag is important to allow baby to move freely, particularly when starting to roll & to reduce the risk of overheating.