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Description
Delta Dry Waterproof Short Leg Cast Kit — Swim Cast Materials for Below-Knee Fractures
The Delta Dry Waterproof Short Leg Cast Kit contains everything needed to create a true waterproof below-knee cast using the Delta Dry two-piece system — a water-resistant Delta stockinette liner, Delta Dry waterproof padding rolls, and fiberglass casting tape. Bring this kit to your clinician for professional application. Once applied, patients can shower, bathe, and swim throughout their recovery without covering or removing the cast.
Delta Dry by BSN Essity uses a two-component approach: a water-resistant stockinette is applied first, followed by Delta Dry waterproof padding rolls, then fiberglass tape. Water passes through the system and drains freely from both ends, preventing the moisture buildup that causes traditional cotton-padded casts to soften, develop odor, and break down — especially critical for leg casts worn during summer or by active patients.
What’s Included — Kit Contents by Patient Size
Patient Size
Delta Dry Padding
Delta Stocking
Cast Tape
Pediatric (Infant–2 yrs)
2 — 2″
24″ — 2″
3 — 2″
Child (3–12 yrs)
3 — 2″
36″ — 3″
3 — 3″
Teen (13–16 yrs)
2 — 3″ & 1 — 4″
36″ — 4″
1 — 3″ & 2 — 4″
Female Adult (17+ yrs)
2 — 3″ & 1 — 4″
36″ — 5″
2 — 3″ & 2 — 4″
Male Adult (17+ yrs)
3 — 4″
36″ — 5″
2 — 3″ & 2 — 4″
Select your patient size and cast tape color at checkout. All quantities are per kit.
Why Choose Delta Dry for a Waterproof Short Leg Cast?
True waterproof cast — not a removable cover. Water passes through and drains freely; no moisture trapped against skin
Two-piece system — water-resistant Delta stockinette + Delta Dry padding rolls for a familiar wrap-and-pad workflow
Swim, shower & bathe freely — patients maintain normal hygiene and activity levels during recovery
Compatible with standard fiberglass tape — no proprietary casting system required
Pediatric through adult sizing — kits sized for every patient from infant to large adult
BSN Essity brand — same manufacturer as AquaCast; trusted by orthopedic clinics worldwide
Delta Dry vs. AquaCast — Which Waterproof Cast System Is Right?
How does Delta Dry differ from AquaCast?
Both are BSN Essity waterproof cast systems, but they use different padding designs. Delta Dry uses a two-piece approach: a water-resistant stockinette liner applied first, followed by Delta Dry padding rolls. AquaCast uses a single pillow-type open-cell padding that replaces traditional cotton padding entirely. Both allow full water exposure — swimming, showering, and bathing. The choice is typically made by the clinician based on their preferred workflow and the patient’s anatomy.
Indications — Who Needs a Waterproof Short Leg Cast?
Active patients — children, swimmers, athletes — who cannot avoid water exposure during recovery
How to Apply Delta Dry Waterproof Short Leg Cast
Apply Delta Stocking — slip the water-resistant stockinette over the foot and up to just below the knee
Apply Delta Dry Padding — wrap the waterproof padding rolls smoothly from toes to below the knee, overlapping each layer by 50%
Apply Fiberglass Cast Tape — wrap over the Delta Dry padding to complete the waterproof short leg cast
Must be applied by a trained orthopedic technician, physician, or casting staff. Bring this kit to your clinical appointment.
Frequently Asked Questions
Can I swim and shower with a Delta Dry waterproof short leg cast?
Yes. Delta Dry uses a water-resistant stockinette and waterproof padding rolls that allow water to pass through and drain freely from both ends of the cast. Unlike traditional cotton-padded leg casts that trap moisture and break down when wet, Delta Dry is designed for full water exposure — swimming, showering, and bathing are all permitted once the cast is properly applied by a clinician.
What is included in the Delta Dry Short Leg Cast Kit?
Each kit includes Delta Dry waterproof padding rolls, a Delta water-resistant stockinette, and fiberglass casting tape — all sized for the selected patient size. The clinician applies all components at the appointment. No additional padding, stockinette, or tape is needed.
What is the difference between a short leg cast and a long leg cast?
A short leg cast extends from the foot to just below the knee, immobilizing the ankle and foot. A long leg cast extends to the upper thigh and also immobilizes the knee. Short leg casts are used for ankle fractures, foot fractures, and post-surgical foot or ankle immobilization. Long leg casts are used when knee immobilization is also required.
Does my doctor apply the Delta Dry kit, or can I do it myself?
Delta Dry must be applied by a trained orthopedic technician, physician, or casting staff. The kit is purchased by the patient and brought to the clinical appointment, where the clinician applies the stockinette, padding, and fiberglass tape. Self-application is not recommended and may result in improper fit or injury.
Is this kit FSA or HSA eligible?
Delta Dry waterproof cast kits are generally FSA/HSA eligible when prescribed by a physician. Eligibility depends on your specific plan administrator — we recommend confirming with your FSA/HSA provider before purchase. OrthoTape is an authorized distributor of Delta Dry (BSN Essity) products.
Delta Dry is a clinical casting product intended for application by trained medical professionals. OrthoTape is an authorized distributor of Delta Dry (BSN Essity) products. FSA/HSA eligible when prescribed by a physician — check with your plan administrator. This content is for informational purposes only and does not constitute medical advice.
This is a top of the line boot. I have used another brand given to me by my doctors office that that had a lip on the outside not padded which created skin breakdown on the out side of my foot. The form fit design does not have a lip and has more rubber padding at the sides than the competitor. I showed the difference in engineering design to my doctor and highly recommended the form fit boot. Please
Note they were the same price.
So, I finally got the opportunity to use the casting tape today. I want to preface this by saying I'm not a professional caster.
The tape seemed to dry out a bit too fast (it was a bit of a hot day, but I used cold tap water. As a result, the layers didn't seem to mold together very well. However, that may have more to do with MY lack of experience.
The one complaint is that the hot pink had some light (almost white) spots in the roll, and a strange waffle pattern in the ends of the rolls.
Hi Alan, thanks for sharing your experience. The white spots are caused by the dry gloves touching the casting tape. Usually when I do a final layer, I do not touch the tape at all except for the sides, so I get the perfect color finish. As for the honeycomb at the end. In our next batch we are changing that center so it does not do that. Usally I cut it off with scissors before that. As for drying out, that has to do with how fast you are at casting. Since you said you were new at it, that can happen as you have to work quickly with the tape before it hardens. You will get better with more practice. Also make sure your bucket is a new bucket, a household cleaning bucket can have cleaning residue which can cause issue with the polyurethane resin.
I have used in the past and it is great! Best advice is that it stretches more so get a size smaller than you think. But it’s a lifesaver in pediatrics!!
Hi Ericca, thank you for your wonderful feedback! If you like Delta Dry, try our OrthoH2O we are happy to send some samples to you. It is a much easier one piece application. It does not tear easy like Delta Dry and it is much more cost effective. See it here or search OrthoH2O on our site: https://orthotape.com/collections/orthoh2o-waterproof-cast