A ruler A pen or marker Plastic cling wrap or a thin plastic bag Two full, one-liter (or one-quart) cartons of milk or juice, in square bottom cartons A stack of 12 CDs or DVDs

Draw similar lines on the other three sides of the carton. You should now have one carton with a ring drawn all the way around it. It is not necessary to repeat this with the other carton.

Make sure to take the CDs out of their cases. When you are done, set the CDs on the mattress. Pick the softest part of the mattress. This is important. Your baby could roll anywhere on the mattress during the night, so it’s important to test the softest part and, especially, where the baby’s head will be placed.

Put the second carton on top of the first one, also on its side. Place it however you need to in order for the cartons and CDs to balance horizontally.

If the overhanging portion of the carton does not touch the mattress, it is safe for use. If the overhanging portion is touching the mattress, the mattress is too soft. You should replace it. You want to make sure the mattress you use is safe for your baby.

A paperback book that is printed in B-format and that is at least 12 mm (one-half inch) thick. B-format simply means that the height of the book is about 200 mm (8 inches) and the width of the book is about 128 mm (5 inches). A ruler Two full, one-liter (or one-quart) cartons of milk or juice (or a single, two-liter carton), where the carton can be of any shape.

If it looks like the upper picture, then it is firm enough. If it looks like this lower picture, then it is too soft. {“smallUrl”:“https://www. wikihow. com/images/8/82/Wikihow-Part-2%2C-section-4b. png”,“bigUrl”:"/images/thumb/8/82/Wikihow-Part-2%2C-section-4b. png/389px-Wikihow-Part-2%2C-section-4b. png",“smallWidth”:460,“smallHeight”:345,“bigWidth”:389,“bigHeight”:292,“licensing”:"<div class="mw-parser-output">

Image by: Uploader
\nLicense: <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="https://creativecommons. org/licenses/by/3. 0/">Creative Commons</a>\n</p></div>"}

Keep in mind, you should still test any mattress you purchase yourself. While mattresses may be tested in the factory, there’s still a chance a soft mattress slipped through the cracks.

The bars on a crib should be no more than 2 and 3/8 inches apart. You do not want a baby to stick his or her head through the bars. The top of a crib’s rails should be at least 26 inches from the top of the mattress. You may have to lower the mattress periodically as your child gets taller.

Do not use crib bumpers or bumper pads either. If you want to keep your baby warm, it’s better to layer him or her in clothing. This is safer than covering your baby with a blanket. However, babies do not always need extra bundling. A room temperature between 70 and 72 degrees is usually enough to keep a baby warm at night.

Babies can breathe easiest when lying on their backs. There are no obstructions keeping them from breathing. If babies spit up in their sleep, they can easily swallow the spit when lying on their backs. Check with your doctor to see if your child has health concerns that might change their safest sleeping position.

You should also avoid napping with a baby on the couch or in a bed.

Keep your baby’s arms outside of the blanket. Tuck the blanket in to the sides and bottom of the crib. This will keep it secure, preventing your baby from pulling it over his or her head at night.

It may be a good idea to have instructions taped or pinned up near the baby’s crib.