I first came across this gadget in a breastfeeding Facebook group. Haakaa is a New Zealand brand. I ended up buying it on the Amazon US site at the time via seller Think Green (Haakaa authorised seller) but I'm glad it's now available on the UK site :) This device looks so simple yet so clever! It's portable (approx 14cm tall, bulb 5cm wide and flange 8cm diameter), doesn't need batteries, doesn't make noise and it's easy to clean/sterilise! You position the flange on your breast and squeeze the bulb before cupping it onto the breast. Don't squeeze too hard or else the strong suction will make your breast hurts. You may need several adjustments to get the positioning and level of suction right, but you'll get there with more practice. I find I only need a small level of suction but bear in mind it will be different for everyone! Massaging the breast before use may also help to initiate the let down. I never got much from expressing. I have used an Avent electric pump and only got a total of 4oz from both breasts after 30mins on EACH side. With the haakaa, I attach it whilst baby feeds off the other side so without much effort I get 1oz per session. This is the let down milk which is more watery and rich in carbohydrates so be aware that it's not as fatty as 'hind' milk so I don't use it as a full feed nor freeze it; I just add it to solid food for my baby (9 months old) instead of using cow's milk. This may not be good for those who has an over-supply because it may exacerbate the problem. In effect this is similar to breast shells. I've used the Avent breast shells to collect leakages before. Because the shells are worn in the bra, it's not particularly comfortable especially with engorged breasts, and it's prone to spills. I find the Haakaa is mostly hands free because my letdown is only 1oz or so but if you're lucky to collect much more breastmilk, I suspect it could get heavy and may need some hand support or suction may tail off at some point. Beware older babies may try to play with it, potentially knocking it over and spilling your precious liquid gold! There are markings on the pump (1-4oz and 10-100ml) however they are not really accurate. You will see the graduations spaced equally but as the bulb is round in shape there's no way each oz mark is equal in volume! I used some tap water and measuring cylinder in experiment and found that the 1oz mark = 16ml; 2oz mark = 39ml; 3oz mark = 66ml; 4oz mark = 90ml. There are other markings which indicate it can be heated to 250degC, or freezable to -20degC, oven safe and dishwasher safe. The pump also has a lid (sold separately by Haakaa) which can be handy. I understand this should be available on Amazon uk soon. I'm aware there's many cheap fakes out there but I'm paying for this for the comfort that it meets Uk safety standards and I know it's 100% food grade silicone. Chemicals in fakes can leak into the breastmilk causing harm to babies, or even cause chemical burns to the breast, so not a risk I'm prepared to take. The authentic Haakaa packaging is a thick sturdy cardboard cylinder. My Haakaa device weighs 73 grams on my digital scale. According to a post I saw on Haakaa Facebook, fakes often weigh much more (closer to 100 grams) due to thicker silicone.