sling is still considered safe. Tail length is decided by personal preference with most preferring the tail to hit about hip or mid thigh. The recommended maximum weight limit for wearing baby in a ring sling is up to 35lbs. Pouch slings Sometimes called "tube", "pocket" or "ringless" slings, these are generally formed by a wide piece of fabric sewn into a tubular shape. Simple, or fitted pouches do not have rings or other hardware. Adjustable pouches may adjust with zippers, snaps, buckles, clips, rings, drawstrings, Velcro, and other methods. Most pouches have a curve sewn in to shape the cloth to the parent's body and hold the baby more securely than a simple straight tube. The wearer slips the pouch over the head and one shoulder, sash-style, creating a pocket or seat to hold the baby in. Many paediatricians and baby-wearing experts do not recommend pouch slings because babies can suffocate when held incorrectly. Suffocation risk is greatest in newborns and infants under six months, and usually occurs because the baby's chin is collapsed against his or her chest, constricting the airway. Pouch slings also often restrict the parent's view of their child, making suffocation more likely. When using a pouch sling, wearers should be sure to keep the baby's face elevated and clearly visible. Wraps Wraps (sometimes called "wraparounds" or "wraparound slings") are lengths of fabric (usually between 2 metres and 6 metres, or 2.5–7 yards long, and 15–30 inches wide), which are wrapped around both the baby and the wearer and then tied. There are different carrying positions possible with a wrap, depending on the length of the fabric. A baby or toddler can be carried on the wearer's front, back or hip. With shorter wraps it is possible to do a one-shouldered carry, similar to those done with a pouch or a ring sling, although most carries involve the fabric going over both shoulders of the wearer and often around the waist to offer maximum support. There are two main types of wrap—stretchy and woven. Stretchy wraps are generally made of knits such as jersey or interlock. It is easy to take babies in and out of a stretchy wrap. This can be easier for the wearer as the sling often remains tied on and the baby is lifted out and put back in as required. Several factors influence stretchiness: carriers with any spandex or lycra