
Relieving common SI joint, low back, and hip pain during pregnancy and postpartum, the Maternity SI-LOC® Support Belt offers comfortable compression and relief without unnecessary bulk. This machine washable support belt is available in sizes small/medium and large/extra-large.

Constructed of lightweight, breathable material, and designed to comfortably, yet firmly support the pelvic structures during and after pregnancy.

Patented design eliminates the unnecessary bulk of other maternity belts, making it easy to conceal under clothing for all day comfort.

Features a "no buckle" design and includes a detachable pad for extra support.

Tackle postpartum pain by supporting your pelvis during recovery. This patented design works to combat sacroiliac pain in pregnancy and postpartum.
Constructed of lightweight, breathable material, the Maternity SI-LOC® conceals under clothing but firmly supports the pelvic structures. It features a ‘no-buckle’ design and includes a detachable pad for extra support.

For best results, wear the SI-LOC either over your underwear or, if it tends to slip, directly on your skin. Place It at a level just above the top point of the greater trochanters of the hip.


To determine your size, measurement should be taken from one ASIS (the most prominent point on the front side of the pelvis) around the back to the other ASIS.
Apply the abdominal support pad in a lifting position under the abdomen.
In the back, align the SI-LOC label with the midline of the sacrum.
Tighten the SI-LOC. The force necessary to obtain stabilization ranges from only 18 to 33 pounds. The Maternity SI-LOC should be snug, but comfortable.

Valerie graduated with a degree in physical therapy from the University of Minnesota in 1981. She was certified by the International Academy of Orthopedic Medicine, IAOM, in orthopedic manual therapy in 1989, and became an international instructor for the IAOM in 1994. Dr. Phelps became a Board-Certified Orthopedic Specialist, OCS, through the American Board of Physical Therapy Specialties in 2003. She is a Fellow with the American Academy of Orthopedic Manual Physical Therapists, FAAOMPT since 2004. She graduated with a terminal professional degree, a Doctor of Science, ScD, in Physical Therapy from Texas Tech University, Lubbock TX, in December 2011. Along with being the founder and current senior faculty of the IAOM-US. She has lectured throughout the United States and Europe. Dr. Phelps has co-authored several books, book chapters, and numerous peer review journal articles. She is the founder of, and currently practices at, Advanced Physical Therapy in Anchorage.

Relieving common SI joint, low back, and hip pain during pregnancy and postpartum, the Maternity SI-LOC® Support Belt offers comfortable compression and relief without unnecessary bulk. This machine washable support belt is available in sizes small/medium and large/extra-large.

Constructed of lightweight, breathable material, and designed to comfortably, yet firmly support the pelvic structures during and after pregnancy.

Patented design eliminates the unnecessary bulk of other maternity belts, making it easy to conceal under clothing for all day comfort.

Features a "no buckle" design and includes a detachable pad for extra support.

Tackle postpartum pain by supporting your pelvis during recovery. This patented design works to combat sacroiliac pain in pregnancy and postpartum.
Constructed of lightweight, breathable material, the Maternity SI-LOC® conceals under clothing but firmly supports the pelvic structures. It features a ‘no-buckle’ design and includes a detachable pad for extra support.

For best results, wear the SI-LOC either over your underwear or, if it tends to slip, directly on your skin. Place It at a level just above the top point of the greater trochanters of the hip.


To determine your size, measurement should be taken from one ASIS (the most prominent point on the front side of the pelvis) around the back to the other ASIS.
Apply the abdominal support pad in a lifting position under the abdomen.
In the back, align the SI-LOC label with the midline of the sacrum.
Tighten the SI-LOC. The force necessary to obtain stabilization ranges from only 18 to 33 pounds. The Maternity SI-LOC should be snug, but comfortable.

Valerie graduated with a degree in physical therapy from the University of Minnesota in 1981. She was certified by the International Academy of Orthopedic Medicine, IAOM, in orthopedic manual therapy in 1989, and became an international instructor for the IAOM in 1994. Dr. Phelps became a Board-Certified Orthopedic Specialist, OCS, through the American Board of Physical Therapy Specialties in 2003. She is a Fellow with the American Academy of Orthopedic Manual Physical Therapists, FAAOMPT since 2004. She graduated with a terminal professional degree, a Doctor of Science, ScD, in Physical Therapy from Texas Tech University, Lubbock TX, in December 2011. Along with being the founder and current senior faculty of the IAOM-US. She has lectured throughout the United States and Europe. Dr. Phelps has co-authored several books, book chapters, and numerous peer review journal articles. She is the founder of, and currently practices at, Advanced Physical Therapy in Anchorage.
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